NEC 2026 Compatible

An electrician is running a new power-limited fire alarm (PLFA) circuit from a fire alarm control panel to a smoke detector. The circuit conductors are installed in the same raceway as a 120V general-purpose lighting circuit. The PLFA circuit conductors are not separated by a barrier. Per NEC 760.136(A), what is the permissible method for this installation?

Journeyman Level📋 NEC 760.136(A)Fire Alarm Systems
A

This installation is permissible if the PLFA conductors are rated for the highest voltage present in the raceway.

B

This installation is permissible only if the 120V circuit is also a fire alarm circuit.

C

This installation is a violation; PLFA circuits must always be in separate raceways from non-fire alarm circuits.

D

This installation is permissible if the 120V conductors are insulated for at least 300V.

Explanation & Direct Citation

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