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  • 8/10/2019 Cable Sizing & VDC

    1/39

    Cable Sizing & VDC

    VOLTAGE DROP & CABLE SIZING

    Calculation Sheet

    EXPAND SHAIBAH ABQAIQ P/L CAPACITY-1000MBC

    PMT AND CAT PROPOSED ACCOMODATION

    KM. 431

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    Cable Sizing & VDC

    TO AREA LIGHTING ( 7 LIGHTING POLES)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDLF) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 1.47 x 0.85 ) + ( 0.1060 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.305 x 210) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    CABLE PC-0001 ELEC. PANELBOARD PMT GUARDHOUSE (DP-02B)

    3.50

    0.98

    0.78

    69.03

    0.85

    210 688.80

    1.4700

    0.1060

    1.3050

    0.2740

    Calculation Sheet

    4.36

    11.02

    0.97

    0.95

    220

    9.19

    5.00

    1.98

    215.64

    1.982

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    Cable Sizing & VDC

    Calculation Sheet

    TO AREA LIGHTING ( 9 LIGHTING POLES)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDLF) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 35 mm! Ampacity = 158 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 158 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 35 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 111 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.6690 x 0.85 ) + ( 0.0980 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.6203 x 325) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    20.99

    CABLE PC-0002 ELEC. PANELBOARD PMT GUARDHOUSE (DP-02B)

    8.00

    220

    0.78

    3.332

    0.6203

    11.29

    0.85

    325 1066.00

    0.6690

    25.19

    0.97

    0.95

    0.98

    0.2016

    7.33

    5.00

    3.33

    212.67

    0.0980

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    Cable Sizing & VDC

    Calculation Sheet

    TO AREA LIGHTING ( 7 LIGHTING POLES)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDLF) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.1.4700 x 0.85 ) + ( 0.1060 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.3050 x 200) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    CABLE PC-0003A ELEC. PANELBOARD PMT GUARDHOUSE (DP-02B)

    0.97

    220

    9.19

    1.887

    215.85

    11.02

    0.98

    0.78

    69.03

    1.3050

    0.2610

    4.15

    5.00

    1.89

    0.85

    200 656.00

    1.4700

    0.1060

    0.95

    3.50

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    Cable Sizing & VDC

    Calculation Sheet

    TO AREA LIGHTING ( 6 LIGHTING POLES)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDLF) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 1.4700 x 0.85 ) + ( 0.1060 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.3050 x 220) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    CABLE PC-0003B ELEC. PANELBOARD PMT GUARDHOUSE (DP-02B)

    3.00

    220

    7.87

    9.45

    0.97

    0.95

    0.98

    0.78

    69.03

    0.85

    220 721.60

    1.4700

    0.1060

    1.3050

    0.2871

    3.91

    5.00

    1.78

    216.09

    1.778

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    Cable Sizing & VDC

    Calculation Sheet

    TO AREA LIGHTING ( 6 LIGHTING POLES)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 1.4700 x 0.85 ) + ( 0.1060 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.305 x 151) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.1.425

    495.28

    1.4700

    0.1060

    1.3050

    151

    0.1971

    3.13

    5.00

    1.43

    216.87

    0.97

    0.85

    3.50

    220

    9.19

    11.02

    ELECTRICAL PANELBOARD CAT GUARDHOUSE

    0.98

    0.78

    69.03

    CABLE PC-0004

    0.95

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    Cable Sizing & VDC

    Calculation Sheet

    TO AREA LIGHTING ( 5 LIGHTING POLES)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 1.4700 x 0.85 ) + ( 0.1060 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.305 x 250) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    220

    6.56

    7.87

    0.97

    0.95

    CABLE PC-0005 ELECTRICAL PANELBOARD CAT GUARDHOUSE

    2.50

    5.00

    1.69

    216.29

    1.685

    1.4700

    0.1060

    3.71

    1.3050

    0.3262

    0.98

    0.78

    69.03

    0.85

    250 820.21

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    Cable Sizing & VDC

    Calculation Sheet

    TO AREA LIGHTING ( 6 LIGHTING POLES)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 1.4700 x 0.85 ) + ( 0.1060 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.3050 x 250) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    0.95

    5.00

    1.69

    216.29

    1.685

    1.4700

    0.1060

    1.3050

    0.3263

    3.71

    CABLE PC-0006 ELECTRICAL PANELBOARD CAT GUARDHOUSE

    3.00

    0.98

    0.78

    69.03

    0.85

    250 820.21

    220

    7.87

    9.45

    0.97

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    Cable Sizing & VDC

    Calculation Sheet

    TO JOCKEY PUMP MOTOR

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 1.47 x 0.85 ) + ( 0.1068 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.3058 x 50) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    2.23

    215.10

    2.226

    0.1068

    1.3058

    0.0653

    4.90

    5.00

    0.85

    50 164.00

    1.4700

    51.96

    0.97

    0.95

    0.98

    0.78

    16.50

    220

    43.30

    69.03

    CABLE PC-0007 MAIN ELECTRICAL PANELBOARD (MDP-3)

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    Cable Sizing & VDC

    Calculation Sheet

    TO MAIN BUSBAR PANEL (MBP-01)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 250 mm! Ampacity = 1808 Amperes 4 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 1808 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 250 mm!

    Cable Selected : 4 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 1274 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 4

    Z = ( 0.0967 x 0.85 ) + ( 0.0900 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1296 x 10) / (4 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    0.18

    219.60

    0.181

    0.0900

    0.1296

    0.0003

    0.40

    5.00

    1273.55

    0.85

    10 32.80

    0.0967

    850.30

    0.97

    0.95

    0.98

    0.78

    270.00

    220

    708.59

    CABLE PC-0008 GENERATOR (G-1) (RUNNING)

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    Calculation Sheet

    TO MAIN BUSBAR PANEL (MBP-01)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 250 mm! Ampacity = 1808 Amperes 4 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 1808 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 250 mm!

    Cable Selected : 4 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 1274 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 4

    Z = ( 0.0967 x 0.85 ) + ( 0.0900 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1296 x 10) / (4 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    270.00

    220

    708.59

    850.30

    0.97

    0.95

    0.98

    0.78

    1273.55

    CABLE PC-0009 GENERATOR (G-2) (STAND-BY)

    0.85

    10 32.80

    0.0967

    0.0900

    0.1296

    0.0003

    0.40

    5.00

    0.18

    219.60

    0.181

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    Calculation Sheet

    TO MAIN DISTRIBUTION PANEL (MDP-1)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 250 mm! Ampacity = 1808 Amperes 4 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 1808 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 250 mm!

    Cable Selected : 4 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 1274 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 4

    Z = ( 0.0967 x 0.85 ) + ( 0.0900 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1296 x 10) / (4 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    CABLE PC-0010 MAIN BUSBAR PANEL (MBP-01)

    270.00

    220

    708.59

    850.30

    0.97

    0.95

    0.98

    0.78

    1273.55

    0.85

    10 32.80

    0.0967

    0.0900

    0.1296

    0.0003

    0.40

    5.00

    0.18

    219.60

    0.181

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    Cable Sizing & VDC

    Calculation Sheet

    TO PANELBOARD INSIDE THE SAPMT BLDG. (PB-1)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 70 mm! Ampacity = 229 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 229 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 70 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 161 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.3430 x 0.85 ) + ( 0.0950 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1345 x 171 / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    0.78

    1.20

    217.36

    1.200

    0.0950

    0.1307

    0.0224

    2.64

    5.00

    26.00

    220

    68.23

    CABLE PC-0011A MAIN DISTRIBUTION PANEL (MDP-1)

    161.31

    0.85

    171 560.88

    0.3430

    81.88

    0.97

    0.95

    0.98

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    Calculation Sheet

    TO BUSBAR OUTSIDE THE SAPMT BLDG. (BP-01)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 250 mm! Ampacity = 632 Amperes 2 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 632 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 250 mm!

    Cable Selected : 2 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 445 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 2

    Z = ( 0.1908 x 0.85 ) + ( 0.0910 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.2101 x 171) / (2 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    445.18

    0.85

    171 560.88

    0.1908

    0.0910

    0.2101

    0.0180

    5.67

    5.00

    2.58

    214.33

    2.579

    CABLE PC-0011B MAIN DISTRIBUTION PANEL (MDP-1)

    69.51

    220

    182.42

    218.91

    0.97

    0.95

    0.98

    0.78

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    Calculation Sheet

    TO PANELBOARD INSIDE THE SAPMT BLDG. (PB-3)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 70 mm! Ampacity = 229 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 229 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 70 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 161 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.3430 x 0.85 ) + ( 0.0950 x sinarccos( 0.85 )) = ohms / KM

    Ze = 0.1307 x 180) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    5.00

    1.08

    217.63

    1.079

    161.31

    0.85

    180 590.55

    0.3430

    0.0950

    0.1307

    0.0235

    2.37

    CABLE PC-0011C MAIN DISTRIBUTION PANEL (MDP-1)

    22.20

    220

    58.26

    69.91

    0.97

    0.95

    0.98

    0.78

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    Calculation Sheet

    TO PANELBOARD OUTSIDE (DP-01A) THE SAPMT VIP ACCOM.

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 185 mm! Ampacity = 774 Amperes 2 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 774 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 185 mm!

    Cable Selected : 2 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 545 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 2

    Z = ( 0.1290 x 0.85 ) + ( 0.0910 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1576 x 152) / (2 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    2.67

    214.12

    2.672

    0.0910

    0.1576

    0.0120

    5.88

    5.00

    545.20

    0.85

    152 498.56

    0.1290

    340.12

    0.97

    0.95

    0.98

    0.78

    108.00

    220

    283.44

    CABLE PC-0012 MAIN DISTRIBUTION PANEL (MDP-1)

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    Calculation Sheet

    TO PANELBOARD INSIDE THE SAPMT MOSQUE

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 1.4700 x 0.85 ) + ( 0.10607 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.3050 x 174) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    3.05

    213.30

    3.049

    0.1060

    1.3050

    0.2770

    6.71

    5.00

    69.03

    0.85

    174 570.72

    1.4700

    20.47

    0.97

    0.95

    0.98

    0.78

    6.50

    220

    17.06

    CABLE PC-0013 MAIN DISTRIBUTION PANEL (MDP-1)

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    Cable Sizing & VDC

    Calculation Sheet

    TO MAIN DISTRIBUTION PANEL (MDP-2)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 250 mm! Ampacity = 1808 Amperes 4 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 1808 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 250 mm!

    Cable Selected : 4 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 1274 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 4

    Z = ( 0.0967 x 0.85 ) + ( 0.0900 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1296 x 10) / (4 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    0.18

    219.60

    0.181

    0.85

    10 32.80

    0.0967

    0.0900

    0.1296

    0.0003

    0.40

    5.00

    270.00

    220

    708.59

    850.30

    0.97

    0.95

    0.98

    0.78

    1273.55

    CABLE PC-0016 MAIN BUSBAR PANEL (MBP-01)

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    Cable Sizing & VDC

    Calculation Sheet

    TO PANELBOARD OUTSIDE (DP-02A) SAPMT SENIOR ACCOM

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 185 mm! Ampacity = 774 Amperes 2 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 774 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 185 mm!

    Cable Selected : 2 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 545 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 2

    Z = ( 0.1290 x 0.85 ) + ( 0.0910 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1576 x 80) / (2 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    130.00

    220

    341.17

    545.20

    0.85

    80 262.40

    0.1290

    409.41

    0.97

    0.95

    0.98

    0.78

    CABLE PC-0017 ELECTRICAL PANELBOARD ( MDP-2)

    1.69

    216.28

    1.693

    0.0910

    0.1576

    0.0063

    3.72

    5.00

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    Cable Sizing & VDC

    Calculation Sheet

    TO PANELBOARD INSIDE THE SAPMT RECREATION BLDG.

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 120 mm! Ampacity = 310 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 310 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 120 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 218 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.1970 x 0.85 ) + ( 0.0910 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.2153 x 116) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    215.46

    2.064

    0.0910

    0.2153

    0.0249

    4.54

    5.00

    116 380.48

    0.1970

    125.97

    0.97

    0.95

    0.98

    0.78

    2.06

    40.00

    220

    104.98

    CABLE PC-0018A ELECTRICAL PANELBOARD ( MDP-2)

    218.36

    0.85

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    Cable Sizing & VDC

    Calculation Sheet

    TO PANELBOARD INSIDE THE SAPMT RECREATION BLDG.

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 70 mm! Ampacity = 229 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 229 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 70 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 161 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.3430 x 0.85 ) + ( 0.0950 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1307 x 116) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    0.0950

    0.1307

    0.0152

    2.26

    5.00

    1.03

    217.74

    1.028

    CABLE PC-0018B ELECTRICAL PANELBOARD ( MDP-2)

    32.80

    220

    86.08

    103.30

    0.97

    0.95

    0.98

    0.78

    161.31

    0.85

    116 380.48

    0.3430

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    Cable Sizing & VDC

    Calculation Sheet

    TO BUSBAR OUTSIDE THE SAPMT CAFETERIA (BP-03)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 185 mm! Ampacity = 387 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 387 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 185 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 273 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.1290 x 0.85 ) + ( 0.0910 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1575 x 99) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    223.60

    0.97

    0.95

    0.98

    0.78

    71.00

    220

    186.33

    2.29

    214.97

    2.288

    0.0910

    0.1575

    0.0156

    5.04

    5.00

    272.60

    0.85

    99 324.72

    0.1290

    CABLE PC-0019A ELECTRICAL PANELBOARD ( MDP-2)

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    Cable Sizing & VDC

    Calculation Sheet

    TO PANELBOARD INSIDE THE SAPMT CAFETERIA

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 95 mm! Ampacity = 274 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 274 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 95 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 193 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.2480 x 0.85 ) + ( 0.0930 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.2597 x 99) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    CABLE PC-0019B ELECTRICAL PANELBOARD (M DP-2)

    42.00

    220

    110.23

    132.27

    0.97

    0.95

    0.98

    0.78

    193.00

    0.85

    99 324.72

    0.2480

    0.0930

    0.2597

    0.0257

    4.91

    5.00

    2.23

    215.09

    2.231

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    Cable Sizing & VDC

    Calculation Sheet

    TO DP INSIDE THE SAPMT GUARDHOUSE BLDG (DP-02B)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 125 mm! Ampacity = 316 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 316 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 125 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 223 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.1908 x 0.85 ) + ( 0.0910 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.2101 x 236) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    3.07

    213.24

    3.073

    0.0910

    0.2101

    0.0496

    6.76

    5.00

    222.59

    0.85

    236 774.08

    0.1908

    94.48

    0.97

    0.95

    0.98

    0.78

    30.00

    220

    78.73

    CABLE PC-0020 ELECTRICAL PANELBOARD ( MDP-2)

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    Cable Sizing & VDC

    Calculation Sheet

    TO PANELBOARD INSIDE THE SAPMT CLINIC

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 16 mm! Ampacity = 98 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 98 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 16 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 69 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 1.4700 x 0.85 ) + ( 0.1060 x sinarccos( 0.85 )) = ohms / KM

    Ze = (1.305 x 60) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    1.46

    216.80

    1.456

    0.1060

    1.3050

    0.0783

    3.20

    5.00

    69.03

    0.85

    60 196.80

    1.4700

    28.34

    0.97

    0.95

    0.98

    0.78

    9.00

    220

    23.62

    CABLE PC-0021 PANELBOARD INSIDE SAMPT GUARDHOUSE (DP-02B)

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    Cable Sizing & VDC

    Calculation Sheet

    TO AREA LIGHTING ( 8 LIGHTING POLES)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 35 mm! Ampacity = 158 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 158 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 35 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 111 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.6690 x 0.85 ) + ( 0.0980 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.6203 x 365) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    0.0980

    0.6203

    0.2264

    8.23

    5.00

    111.29

    0.85

    365 895.44

    0.6690

    3.74

    211.77

    3.741

    PANELBOARD INSIDE PMT GUARDHOUSE (DP-02B)

    25.19

    0.97

    0.95

    0.98

    0.78

    8.00

    220

    20.99

    CABLE PC-0024

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    Calculation Sheet

    TO VIP ROOMS (8 BARRACKS)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 25 mm! Ampacity = 128 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 128 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 25 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 90 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.9270 x 0.85 ) + ( 0.1030 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.8422 x 60) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    1.36

    217.02

    1.357

    0.1030

    0.8422

    0.0505

    2.99

    5.00

    CABLE PC-0025 ELEC. PANELBOARD DP-01A

    13.00

    220

    34.12

    90.16

    0.85

    60 196.80

    0.9270

    40.94

    0.97

    0.95

    0.98

    0.78

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    Calculation Sheet

    TO SENIOR ROOMS (8 BARRACKS)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 25 mm! Ampacity = 128 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 128 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 25 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 90 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.9270 x 0.85 ) + ( 0.1030 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.8422 x 55) / (5 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    1.53

    216.63

    1.530

    0.1030

    0.8422

    0.0463

    3.37

    5.00

    90.16

    0.85

    55 180.40

    0.9270

    50.39

    0.97

    0.95

    0.98

    0.78

    41.99

    CABLE PC-0026 ELEC. PANELBOARD (DP-02A)

    16.00

    220

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    Cable Sizing & VDC

    Calculation Sheet

    TO PANELBOARD INSIDE PMT OFFICE (PB-4)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 120 mm! Ampacity = 310 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 310 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 120 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 218 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.1970 x 0.85 ) + ( 0.0910 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.2154 x 30) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    0.77

    218.30

    0.774

    0.0910

    0.2154

    0.0064

    1.70

    5.00

    218.36

    0.85

    30 98.40

    0.1970

    182.66

    0.97

    0.95

    0.98

    0.78

    58.00

    220

    152.22

    CABLE PC-0028 BUSBAR PANEL OUTSIDE PMT OFFICE (BP-02)

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    Calculation Sheet

    TO PANELBOARD INSIDE PMT MESS (PB-1)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 150 mm! Ampacity = 346 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 346 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 150 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 244 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.1600 x 0.85 ) + ( 0.0910 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1839 x 30) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    0.97

    0.95

    0.98

    0.78

    243.72

    0.85

    30 98.40

    0.1600

    0.0910

    0.1839

    0.0055

    1.78

    5.00

    0.81

    218.22

    0.809

    CABLE PC-0029 BUSBAR PANEL OUTSIDE PMT MESS (BP-03)

    71.00

    220

    186.33

    223.60

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    Calculation Sheet

    TO

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 150% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 150 mm! Ampacity = 692 Amperes 2 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 692 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 150 mm!

    Cable Selected : 2 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 487 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 2

    Z = ( 0.16 x 0.85 ) + ( 0.0957 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.1864 x 50) / (2 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    459.26

    0.97

    0.95

    0.98

    0.78

    FIRE WATER PUMP

    70.00

    220

    183.70

    CABLE PC-0031 ELECTRICAL PANELBOARD ( MDP-3)

    0.67

    218.52

    0.674

    0.0957

    0.1864

    0.0047

    1.48

    5.00

    487.44

    0.85

    50 164.00

    0.1600

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    Calculation Sheet

    TO ELECTRICAL PANELBOARD ( MDP-3)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 95 mm! Ampacity = 822 Amperes 3 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 822 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 95 mm!

    Cable Selected : 3 -SET, 4/C - XLPE/SWA/PVC

    Derated Ampacity : 579 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 3

    Z = ( 0.2480 x 0.85 ) + ( 0.0930 x sinarccos( 0.85 )) = ohms / KM

    Ze = ( .25980 x 10) / (3 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    220

    CABLE PC-0034 MAIN BUSBAR PANEL (MBP-01)

    80.00

    0.85

    0.0009

    0.31

    5.00

    0.14

    219.69

    0.143

    209.95

    251.94

    0.2598

    0.97

    0.95

    0.98

    0.78

    579.01

    10 32.80

    0.2480

    0.0930

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    Calculation Sheet

    TO ELEC. PANELBOARD INSIDE CAT G UARDHOUSE

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 70 mm! Ampacity = 229 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 229 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 70 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 161 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 1

    Z = ( 0.343 x 0.85 ) + ( 0.0988 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.3436 x 181) / (1 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    214.35

    2.570

    CABLE PC-0035 ELECTRICAL PANELBOARD ( MDP-3)

    20.00

    220

    52.49

    62.98

    0.97

    0.95

    0.98

    0.78

    161.31

    0.85

    181 593.68

    0.3430

    0.0988

    0.3436

    0.0622

    5.65

    5.00

    2.57

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    Cable Sizing & VDC

    Calculation Sheet

    TO ELEC. PANELBOARD OUTSIDE CAT OFFICE (DP-03A)

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 35 mm! Ampacity = 316 Amperes 2 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 316 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 35 mm!

    Cable Selected : 2 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 223 amps therefore, cable derated ampacity is ok.

    VOLTAGE DROP :

    Z = (R x pf) + X x sin[arccos(pf)] (NEC Chapter 9, Table 9, Note 2)

    Ze = (Z x L) / (n x 1000)

    where : Z = Impedance

    pf = Power Factor =

    L = Cable Length = meters or feet

    R = Resistance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = Reactance = ohms-neutral/KM (Saudi cable catalogue AC at 90C)

    X = XL, since XCis negligible below 600V (NEC Table 9, 75C (167C))

    n = no. of set/s of multi-core cables or ( for single core, n=1 ) = 2

    Z = ( 0.6690 x 0.85 ) + ( 0.0980 x sinarccos( 0.85 )) = ohms / KM

    Ze = (0.6203 x 150) / (2 x 1000) = ohms

    Voltage Drop (VD) = (Ia x Ze) x m = volts ( m = 1.732 for 3-Phase & m = 2 for Single Phase)

    %VD Required (SAES-P-100) = %

    %VD = VD/VL x 100% = %

    Voltage Reading at Junction = volts

    TOTAL % VOLTAGE DROP = % Therefore, voltage drop ok.

    CABLE PC-0036 ELECTRICAL PANELBOARD ( MDP-3)

    50.00

    220

    131.22

    157.46

    0.97

    0.95

    0.98

    0.78

    222.59

    0.85

    150 557.74

    0.6690

    0.0980

    0.6203

    0.0465

    10.57

    5.00

    4.80

    209.43

    4.806

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    Calculation Sheet

    TO WATER PUMP

    Total Load kVA = kVA

    Line Voltage (nominal) = volts phase = !

    Maximum Load Current (Ia) = (Load kVA x 1000) / ( 1.732 x V ) = amps

    CABLE SIZING : (SAES-P-104, 12.1)

    Assumption Load Current (IDL) = Ia x 120% = amps

    AMPACITY DERATING :

    Select a Cable Size for the requirement = 4 mm! Ampacity = 46 Amperes 1 Set/s of Cable 4 Core/s Cable

    Min. capacity of new cable (Id) = CAB.Ampacity x ( Correction Factor )

    where :

    Correction Factor for Thermal resist. of soil @ 1.2o

    C-m/W = (Saudi cable cat. for direct laid in ground)(SAES-P-104, 12.3)

    Correction Factor for ground temperature @ 40 oC = (Saudi cable cat. for direct laid in ground)

    (SAES-P-104, 12.2)

    Correction Factor for depth of burial @ 0.60 in ground = (Saudi cable cat. for direct laid in ground)

    (Cable Grouping Factor)

    Correction Factor for grouping @ 0.15mtr. Flat formation = (Saudi cable cat. for direct laid in ground)

    Id = 46 x (0.97 x 0.95 x 0.98 x 0.78) = Amps

    CABLE SIZE CONCLUSION :

    Cable Size : 4 mm!

    Cable Selected : 1 -SET, 4/C - XLPE/SWA/PVC

    Cable Ampacity : 32.4 amps therefore, cable derated a


A N ECONOMIC CABLE SIZING IN PV SYSTEMS CASE STUDYpqrs.co.za/.../09/...cable-sizing-in-PV-systems_v2.pdf · APPLICATION NOTE ECONOMIC CABLE SIZING IN PV SYSTEMS: CASE STUDY Lisardo

A N ECONOMIC CABLE SIZING IN PV SYSTEMS CASE STUDYpqrs.co.za/.../09/...cable-sizing-in-PV-systems_v2.pdf · APPLICATION NOTE ECONOMIC CABLE SIZING IN PV SYSTEMS: CASE STUDY Lisardo

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