Smoke alarm question.

Ajr188

Member
Location
New York
Occupation
electrician
Can a feed for a smoke alarm be tapped off a 15 amp branch circuit by code ? Also can someone provide me with the section in the code.

Thanks
 

Little Bill

Moderator
Staff member
Location
Tennessee NEC:2017
Occupation
Semi-Retired Electrician
Yes
You won't find a code addressing this. As long as your splice is correct and the circuit is not overloaded, it's fine to do this. As a matter of fact, I normally splice off a bedroom circuit for the smoke alarms.
 

gadfly56

Senior Member
Location
New Jersey
Occupation
Professional Engineer, Fire & Life Safety
It's advisable to tap a circuit in common use, like hallway lights or some such. That way, if OCPD for the branch is tripped you'll know it in short order. The beeping of the alarm should also be a clue, but correcting the one problem will then solve the other.
 

ptonsparky

Senior Member
Location
NE (9.06 miles @5.9 Degrees from Winged Horses)
Occupation
Electrical Contractor
I agree &
It's advisable to tap a circuit in common use, like hallway lights or some such. That way, if OCPD for the branch is tripped you'll know it in short order. The beeping of the alarm should also be a clue, but correcting the one problem will then solve the other.

always made sure the smokes were on a BC that would be noticed. Master bedroom or similar. Beeping low volume warnings mean nothing to me nowadays.
 

kwired

Electron manager
Location
NE Nebraska
It's advisable to tap a circuit in common use, like hallway lights or some such. That way, if OCPD for the branch is tripped you'll know it in short order. The beeping of the alarm should also be a clue, but correcting the one problem will then solve the other.
The units I've used don't beep when power is off. If they do beep it is because backup battery is at low voltage levels.
 
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