UL has recently conducted research on a wide array of current products and systems originally certified under UL 2196, Tests for Fire Resistive Cables and ULC-S139, Standard Method of Fire Test for Evaluation of Integrity of Electrical Cables and determined that they no longer consistently achieve a two-hour fire-resistive rating when subjected to the standard Fire Endurance Test of UL2196 or ULC-S139. Consequently, UL and ULC will not be able to offer certification to the currently existing program related to these standards.
As a result, manufacturers are no longer authorized to place the UL mark or ULC mark on UL Classified Fire Resistive Cable (FHJR); ULC Listed Fire Resistant Cable (FHJRC); and UL Listed cable with "-CI” suffix (Circuit Integrity).
Furthermore, UL has removed from its certification directory all Electrical Circuit Protective Systems (FHIT) constructed with Fire Resistive Cable.
To date, UL is not aware of any field failures with currently installed systems. For guidance on buildings under construction, visit UL’s website.
UL will provide research findings to the relevant technical committees and work with those bodies to determine appropriate next steps. Stakeholders who want to participate in the standard development activities should contact the relevant standard committees. Until the technical committees’ recommendations are complete, UL has made available an interim certification program for subscribers who wish to certify the above referenced products/systems.