Section 210.12 NEC requires AFCI on outlets installed in dwelling unit bedrooms. Smoke detectors as required in a bedroom on a seperate circuit would be an outlet by definition.Is it the intent of the code to include smoke detectors on an AFCI? I suppose the rational would be the battery back-up would allow continous service if the power supply was interupted by the AFCI......? What is the correct call to make ?
AFCI and smoke detectors
- Thread starter jwhite
- Start date
- Status
- Location
- Lockport, IL
- Occupation
- Retired Electrical Engineer
If a smoke detector is powered by AC, and is installed in a dwelling unit bedroom, then the intent is that the circuit feeding that outlet be protected by an AFCI device. I do not know what you mean by separate circuit. The smoke detector, the lights, and the receptacles can all be on the same circuit.
construct
Senior Member
- Location
- Branson, Missouri
I agree with Charlie. A smoke detector is an outlet and if it is in a bedroom, it requires AFCI protection.
tryinghard
Senior Member
- Location
- California
A smoke detector is clearly an outlet as defined
Hendrix
Senior Member
- Location
- New England
I would hate to be the person who installed the smokes on a circuit other than AFCI if a fire started and cost a life or two.
(sorry I meant to use mlnk's quote)
tryinghard
Senior Member
- Location
- California
I agree, I see this as a violation. If the AFCI opens it is simply doing its job, why circumvent it?
The AFCI exception is in writing in the local code. The local AHJ has ultimate authority. Every EC takes the risk that a fire may start in a job they worked on. It may be material failure or misuse--we try to make sure it is not installer error. That is why we not only follow the code, but also follow superior practice in the trade. We start with hazardous wiring or smoldering boxes and repair the wiring per code to make it safe. The amazing thing is that I constantly see amateur wiring that is clearly dangerous. Hackers create risk.
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