Help please! Smoke alarm wiring - cable colours...

  1. Tangledfeet

    Tangledfeet #1 Fan of 3M's VHB tape

    Messages:
    1,683
    Location:
    St Andrews, Fife, Scotland
    Hi,

    Foolishly I removed an old, broken smoke alarm without taking a photo or note of where the cables went; there's brown, black, grey and green/yellow (earth, obvs).

    However its on a circuit with another identical (to the previous smoke alarm) smoke alarm down the hall so I've had a look at that one and the colours on that are:
    Red - Live
    Brown - Live
    Grey - Neutral
    Black - this smoke alarm has TWO black wires and they go to both Neutral and IC

    alarm.jpg

    With the new smoke alarm cable only having the brown, black, grey and green/yellow I'm a bit thrown on where they go so any qualified advice would be warmly received.

    Thanks!
     
  2. hotponyshoes Member

    Messages:
    3,399
    Location:
    Somerset. Uk
    I am not qualified.
    The IC stands for Inter-Connect. You connect this between all the smoke alarms so when one goes off they all go off.
    I do not know if there is any standard colour code for the ic wires though?
     
    Tangledfeet likes this.
  3. hotponyshoes Member

    Messages:
    3,399
    Location:
    Somerset. Uk
    Smoke alarms are often wired into the same circuit as the lights (so you know if the power has tripped).
    Not sure if its helpful to say that but now I have told you everything I know about them. :)
     
    James1979 and Tangledfeet like this.
  4. Tangledfeet

    Tangledfeet #1 Fan of 3M's VHB tape

    Messages:
    1,683
    Location:
    St Andrews, Fife, Scotland
    Ergo black must be IC... just about to turn off the lights on the board and give it a whirl..!
     
    barking mat likes this.
  5. barking mat

    barking mat Barking at Pigeons

    Messages:
    4,662
    Location:
    Brittany, The Arz Valley.
    I'd assume the black are ic.
     
  6. brightspark

    brightspark Member

    Messages:
    31,770
    Location:
    yarm stockton on tees
    well the old colours are red and black which is live and neutral feed . the new colours linked are brown black and grey . brown live grey neutral and interconnected black .anyone who fits them for a living should have sleeved the grey with blue tape and the link black with brown tape :)
     
    Westfield-builder and mike os like this.
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