DOW RESTRICTED - For internal use only

TOUCH VOLTAGE & GROUND CURRENT CALCULATION

Three Phase System Single Phase SystemLine-to-Neutral Volts (Vn) 230 VoltsLine 1 Calculated Load (A1) 50 AmpLine 2 Calculated Load (A2) 60 AmpLine 3 Calculated Load (A3) 60 AmpService Neutral Impedance Z1 0.1 ΩGround Resistance (3-point method) R 100 Ω

RESULTS RESULTSNeutral/Ground Parallel Resistance 0.10 ΩLine 1 Resistance 4.600 ΩLine 2 Resistance 3.83 ΩLine 3 Resistance 3.83 Ω

Line 1 - Actual Load 49.58 AmpLine 1 Watts 11307.72 WattsLine 1 - Loads Operates at Volts 228.07 Volts

Line 2 - Actual Load 59.74 AmpLine 2 Watts 13678.53 WattsLine 2 - Loads Operates at Volts 228.99 Volts

Line 3 - Actual Load 59.74 AmpLine 3 Watts 13678.53 WattsLine 3 - Loads Operates at Volts 228.99 Volts

Parallel Neutral/Ground Path 69.89 AmpNeutral Watts 487.98 WattNeutral Current 69.82 AmpGround Current 0.07 AmpTouch Voltage from Metal Parts to Earth 6.98 Volts

DOW RESTRICTED - For internal use only

Single Phase SystemCircuit Voltage 230 VoltsCircuit Ampere 16 AmpLoad Resistance 14.38 Ω

Ground Resistance 1 ΩElectrode Resistance 25 ΩBody Resistance 1000 Ω

RESULTSTotal Resistance 38.77 ΩTotal Current 5.93 AmpLoad Voltage Drop 85.29 Volts

Ground/Body Voltage Drop 144.71 VoltsBody Resistance 1000.00 ΩBody Current 144.71 mACircuit Current 14.96 Amp

Jignesh.Parmar jiguparmar@yahoo.com www.electricalnotes.wordpress.com