Online Video

Back to Video Menu  
Illustrated Changes to the NEC, 2005 Edition - Part 2

Article 760

Fire Alarm Systems

760.21 GFCI and AFCI Protection

Part II. Nonpower-Limited Fire Alarm (NPLFA) Circuits

New rule prohibits AFCI protection of the 120V circuit that supplies power for a nonpower-limited fire alarm system.

The power source for a nonpower-limited fire alarm circuit cannot be supplied through ground-fault circuit interrupters or arc-fault circuit interrupters. Figure 760-2

Authorís Comment: This GFCI/AFCI limitation only applies to the circuit that supplies a nonpower-limited fire alarm system. Smoke detectors connected to a 15 or 20A, 120V circuit must be AFCI-protected if located in the bedroom of a dwelling unit [210.12(B)]; because according to NFPA 72, National Fire Alarm Code the circuit for the smoke detectors isnít the power source of a nonpower-limited fire alarm circuit.


VIEW VIDEO
[ Click Here to View ]    
REQUIRES

[ FREE ]
If you have already been approved for reprint permission, you may right mouse click on the link above and choose "Save Target As ..." or "Save Link As ..." to save the file to your local computer.
©2005 Mike Holt Enterprises, Inc.