UL recently certified four new fire-resistive cable systems. The systems carry the following designation:
These 2-hour fire-resistance rated systems are intended to be used in applications where conductors used for transmitting system information are required to remain operational during a fire.
On Sept. 12, 2012, Underwriters Laboratories (UL) notified all fire-resistive (FR) cable manufacturers that UL and ULC (UL Canada) were withdrawing all current listings for FR cable products conforming to the current UL 2196 and ULC S-139 standards. While an interim program was quickly developed, this meant all FR cable manufacturers were no longer permitted to place the UL or ULC mark on the following products:
- UL classified FR cable (FHJR)
- ULC listed FR cable (FHJRC)
- UL listed cable with “-CI” suffix (circuit integrity)
However, as of Dec. 21, 2012, UL and ULC re-established certification of fire-resistive cables for use in electrical circuit integrity systems.