Testing as per IEC 331 test protocol to assess fire survivability of a Combustible Electric Cable coated and directly exposed to fire.

Fire survivability of electric power cables, under fire conditions, is essential for the following systems:

A.Critical life safety circuits: emergency feeders for fire pumps & fire sprinklers, emergency power & lighting circuits, fire alarm systems, elevators,

communications, smoke extractor & air pressurisation fans, venting fans, system controls where orderly egress or safe shutdowns are essential even under fire conditions………. High rise buildings, industrial establishments, subways, tunnels, airports, health care facilities…

B.Protection of circuits in data based systems communication systems & data centers.Following building codes specify that in above applications power cables should be 1

or 2 hour fire rated:

A.US building codes – NFPA 70 & 72; UL 2196 standards

B.CANADIAN building codes – CSA 38-05

C.International building code – ULC S-139.

35 MM ARMOURED 3 PHASE POWER COATED CABLE

10 coats (2.00 MM DFT) with each phase individualy connected through 3AMP MCBS to light bulbs, 220 V circuit.

SYSTEM ENERGISED & EXPOSED TO FIRE AT 3.30 P.M.

SITUATION AT 3.45 TO 5.00 pm UNDER FIRE EXPOSURE: Extensive intumesence being observed.Cable surface has not caught fire.Circuit intact. Phase to phase integrity maintained. Bulbs remaining alight.

SITUATION AT 5.00 to 6.15 pm UNDER FIRE EXPOSURE:

System still protected. No short circuiting observed.

SITUATION AT 6.30 pm FIRE EXTINGUISHED:Despite over 3 hours of fire exposure, phase to phase circuit integrity

maintained. Fire & heat successfully blocked the coating. Circuit still live. No short circuiting observed.

INTUMESCENCE SCRAPPED AS TO OBSERVE CONDITION OF CABLE SURFACE.

OUTER CABLE INSULATION SHOWING PARTIAL HEAT DAMAGE.

INNER PHASE CABLE INSULATION TOTALLY INTACT DESPITE OVER 3 HOURS OF DIRECT FIRE EXPOSURE.

CONCLUSIONS

A) Fire & heat were successfully blocked by the coating. There was no fire ignition or propogation on the coated cable surface.

B) Circuit short circuiting was prevented.

C) Circuit integrity was maintained in each phase, despite continuous fire exposure for over 3 hours.

D) Emission of Halogens, Smoke, Toxic & Corrosive Gases was significantly suppressed.

In line with the test requirements of IEC 331 (fire resisting characteristics of electric cables) test protocol, despite over 3 hours of direct fire & heat exposure:

This coating is therefore an ideal solution to In-situ, On site, convert flammable electric cables into fire rated cables – extended, safe functioning under direct fire exposure, in line with fire survivability requirements.