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Thread: Fire alarm conductor color

  1. #1
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    Fire alarm conductor color

    For a initiating loop, a signaling loop.

    The black is negative and the red or white is positive?

    Where does it say that in the FA code?

  2. #2
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    Quote Originally Posted by panhandle444 View Post
    For a initiating loop, a signaling loop.

    The black is negative and the red or white is positive?

    Where does it say that in the FA code?
    You won't find it there, or anywhere, because it doesn't exist in the codes and standards, AFAIK. Local amendments may change that (Rhode Island is one particular example of insanity), or there may be a project specification spelling it out. It is a common industry practice, but not a requirement otherwise.

  3. #3
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    Quote Originally Posted by gadfly56 View Post
    You won't find it there, or anywhere, because it doesn't exist in the codes and standards, AFAIK. Local amendments may change that (Rhode Island is one particular example of insanity), or there may be a project specification spelling it out. It is a common industry practice, but not a requirement otherwise.


    Having worked extensively under RI fire alarm code rules, I can say all of them are a pointless waste of time.

  4. #4
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    Quote Originally Posted by peter d View Post


    Having worked extensively under RI fire alarm code rules, I can say all of them are a pointless waste of time.

    But in Massachusetts and Rhode island

    Black is negative red/white is positive.
    Generally?
    .....Still just happy to be here.....

  5. #5
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    Quote Originally Posted by shputnik View Post
    But in Massachusetts and Rhode island

    Black is negative red/white is positive.
    Generally?
    Do you mean as a matter of practice or a matter of code?

  6. #6
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    Quote Originally Posted by gadfly56 View Post
    Do you mean as a matter of practice or a matter of code?
    What about local/state amendment? Just curious.
    "Electricity is really just organized lightning." George Carlin


    Derek

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    Quote Originally Posted by jumper View Post
    What about local/state amendment? Just curious.
    For MA and RI I'd have to look that up. I've got more than enough to keep me busy at the moment.

  8. #8
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    Quote Originally Posted by gadfly56 View Post
    For MA and RI I'd have to look that up. I've got more than enough to keep me busy at the moment.
    Are you saying that you making a living is more important than answering my silly questions?

    Well....
    "Electricity is really just organized lightning." George Carlin


    Derek

  9. #9
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    We always use the black as the negative which is common for DC circuits. Why would you use anything different?
    Rob

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    All responses based on the 2014 NEC unless otherwise noted

  10. #10
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    Quote Originally Posted by shputnik View Post
    But in Massachusetts and Rhode island

    Black is negative red/white is positive.
    Generally?
    In the RI code:
    SLC - red is positive, black is negative

    NAC - blue is positive, white is negative

    There are other codes for speakers, door holding circuits, 24 volt aux power, etc but those are the main ones.

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