In order to remain UL 2196 / ULC-S139 (fire only) compliant when installing Radix Wire’s DuraLifeTM FPL Cables in an electrical circuit integrity system, contractors and system designers must abide by the UL-published System No. 28A (FHIT.28A) and System No. 28B (FHIT.28B). Certified hardware components must be utilized and system guidelines and limitations should be closely followed. But what happens when challenges arise or questions come to light that are not covered by the system?
We recommend contacting the Authority Having Jurisdiction (AHJ) representing the municipality, and sometimes the state depending on who has jurisprudence over your project, ahead of time – prior to beginning installation of our cables – to seek approval for any variances from our system. In fact, you may wish to create a dialogue with the AHJ on all projects ensuring he or she is aware of the fire alarm survivability circuit requirements in the National Fire Protection Code (NFPA 72) and of the need for UL 2196 certified fire alarm circuit integrity cables.
For more on the importance of adhering to codes and standards, and why it’s crucial to communicate with the AHJ, please check out the following article written by Wayne D. Moore, P.E., FSFPE, and Vice President at Jensen Hughes.