Fire-resistive, fire-resistant, and circuit integrity cables are primarily installed in mixed occupancy high-rise buildings, tunnels, bridges, and other commercial infrastructures. In many circumstances, the referenced systems exist in conjunction with other fire mitigation system options, which are not in question. Within a building or structure, the locations of these fire-resistive circuit cable systems are typically found as part of the following life safety installations:

• Fire pump-feeder/controls

• Elevators

• Smoke control equipment

• Command center critical systems

• Pressurized stairway systems

• Smoke management systems

• Fire alarm systems

• Electrical equipment rooms - feeders/service

• Emergency generators and standby power systems

Source: Underwriters Laboratories (UL)