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Thread: smoke detectors/arc fault

  1. #1
    a.wayne3@verizon.net Guest

    smoke detectors/arc fault

    210.12 b all outlets in a bedroom to be arc fault protected...........
    outlet def. A point on the wiring system at which current is taken to supply utilization equiptment.
    As I read it,the smoke detectors must be on an arc fault circuit,AHJ here not requiring this to be..........Any thoughts ??????????????? :confused:

  2. #2
    Join Date
    Feb 2003
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    265

    Re: smoke detectors/arc fault

    Is your AHJ up to date and using NEC 2002? If they are still on 1999, then they may not require it due to that.

    IMO, it is required to put the smokes on an AFCI.

    This raises a question of cost vs. quality.

    The smokes should be on a dedicated circuit (IMO), therefore the cost of the install goes up vice tying it into a bedroom AFCI.

  3. #3
    Join Date
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    Re: smoke detectors/arc fault

    Allen,
    If you are using the 2002 NEC they would definitely be required to be AFCI protected unless your area has added an amendment to the NEC to not require this which apparently some areas have done.

    Rich,
    Why do you feel smoke detectors should be on a dedicated circuit? I feel just the opposite. I think they should be required to be connected to a general lighting circuit. If they are on a dedicated circuit they homeowner will not have any indication if this circuit gets turned off or fails.
    Curt Swartz
    Electrical Contractor

  4. #4
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    Illinois
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    Re: smoke detectors/arc fault

    Rich,
    The smokes should be on a dedicated circuit ...
    This is prohibited by some local codes. These codes require that the smokes be connected to a general use lighting circuit so that if the circuit is off the occupant will get it restored. Yes, I know that many smokes have back up battery power, but the most common reaction the intermittent beep of the low battery alarm is to remove the battery.
    Don
    Don, Illinois
    "It is the first responsibility of every citizen to question authority." B Franklin

  5. #5
    Join Date
    Apr 2003
    Location
    California
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    1

    Re: smoke detectors/arc fault

    a,

    It was my understanding afci was designed to support extra protection on receptacles. An sd doesn't have the hoemowner access for power supply, hence the reasoning behind local revisions to this code. Also be aware that afci is not required on any structure that was permitted before 1-1-03. ???

  6. #6
    a.wayne3@verizon.net Guest

    Re: smoke detectors/arc fault

    We are under the 2002 nec,There is no real addendum to the code in regards to smoke detectors just hasn`t come up yet I guess most take outlets to be receptacles

  7. #7
    Join Date
    Feb 2003
    Location
    Massachusetts
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    Re: smoke detectors/arc fault

    What is the benefit of a dedicated circuit? (AFCI or not) :confused:

    What would be the down side of sharing a circuit, the smokes are certainly a minimal load.

    As Don said typical reaction to the chirp is to take batteries out, if on a general lighting circuit it will be looked into and in the mean time you have the batteries.

  8. #8
    Join Date
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    Re: smoke detectors/arc fault

    Inspectors here have always recommended that Smoke Detectors not be on a dedicated circuit. I agree with that opinion.

    Some people have asked that they be on a separate circuit so they could be turned off if there was a problem or they became annoying. This mentality is why we were forced to go to line voltage SDs in the first place. It just doesn't sound like a good idea IMHO.

    Bill

  9. #9
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    Re: smoke detectors/arc fault

    Is anyone aware of a GFCI device that could serve all the circuits in a dwelling unit?

    Roger
    Moderator

  10. #10
    Join Date
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    Location
    San Jose, CA
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    Re: smoke detectors/arc fault

    Allen

    What kind of smoke detectors do you use? I know BRK and Firex smoke detectors do not chirp on failure of AC power. I doubt UL would permit them to have such a feature. Every time the power went off the homeowners would be forced to remove the batteries rendering the detector useless. The only time they should chirp is if the batteries are low or missing.
    Curt Swartz
    Electrical Contractor

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