Fire Resistive Cable

Fire resistive cables are required per nfpa 70 articles 517 695 700 708 and 760 as well as nfpa 72 nfpa 101 nfpa 130 and nfpa 502 lifeline power cables.

Fire resistive cable.

In brief flame retardant cables are designed to resist the spread of fire into a new area. What are fire resistive or fire rated cables. Refer to r27557 fire resistive cable ul vitalink brand type fplr ci st1 cmr ci ls cl3r ci st1 for use in system no. The definition of a fire resistive or fire rated cable is a cable that will continue to operate in the presence of a fire.

First a concern was brought to ul s attention that when fire resistive cables were installed in conduit with a zinc coating the circuit integrity was compromised by a reaction of the zinc with the copper conductors lowering. Category standard 60 when tested in accordance with bs en 50200 method of test for resistance to fire of unprotected small cables for use in emergency circuits. Refer to installation instructions for hardware certifications. For use as ci cable installation follows the nec and local code.

Fire resistant vs flame retardant cables. A fire resistant cable will continue to function in the event of a fire and is also identified as a circuit integrity cable a flame retardant cable on the other hand will not propagate or convey a fire. Fire resistant and fire retardant cable sheaths are design to resist combustion and limit the propagation of flames. Mineral insulated mi cable has provided this added protection for decades.

Bs 7629 1 300 500v fire resistant electric cables with non corrosive gases and low emission of smoke when affected by fire. Low smokes cables have a sheath designed to limit the amount of smoke and toxic halogen gases given off during fire situations. Fhit 40a and fhit7 40a for use as cic cable installation follows fhit 40a fhit7 40a and comtran s installation instructions. Thermosetting insulated armoured fire resistant cables of rated voltage 600 1000 v having low emission of smoke and corrosive gases when affected by fire.

This is commonly known as a circuit integrity ci cable and is 2 hour fire rated. Rhw 2 or rw90 two hour horizontal vertical fire resistive cables in xw breathsaver phenolic conduit ul 2196 certified fire resistive cable for survivability in a fire. Specification for 300 500 v fire resistant screened cables having low emission of smoke and corrosive gases when affected by fire multicore and multipair cables. Vitalink is available in the us and canada.

A flame resistant cable in this manner would let the circuit stay in operation allowing power to be transferred through it while this would not be the case with a flame retardant cable. In addition to the dual rated ci cic cables vitalink now includes the industry s only armored and ethernet cables approved to ul 2196. They have passed rigorous ul fire resistive testing maintaining a constant signal connection for two hours at 1850 f. Ulc listed fire resistant cable circuit integrity rating cir cable fhjrc there are two issues here.