Sizing fire resistant cables is usually done considering their use in normal conditions (70°C, 90°C), which does not take into account the temperature increase due to the fire conditions. However, fire exposure leads to a high increase of the electrical resistance affecting the performances of the fire safety systems.

This becomes a pivotal consideration when sizing fire resistant cables because electrical resistance experiences a dramatic spike as temperatures rise, directly impacting the efficacy of your entire fire safety system and, ultimately, the lives it could sav

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