PIR Floodlight Advice

Discussion in 'Electricians' Talk' started by R Stringer, Oct 22, 2023.

  1. R Stringer

    R Stringer New Member

    I am looking for some kind advice with wiring a new PIR floodlight outside my new build garage, powered from within. Below is the existing wiring.

    Untitled 3.png

    I plan on changing the pendant to a batten light, changing the one gang switch to a two gang and fitting a second batten to the loft space in the future.

    I would like to avoid changing to a 3 gang for the floodlight because the existing conduit wouldn’t allow for all the cables and I’d like the floodlight to be on a separate switch, installed higher to allow isolation and prevent accidental switching.

    The existing pendant switch is the closest point to spur from and has neutrals.


    Am I correct in thinking that I can add a second patress and 1 gang switch and wire as below?

    Untitled 4.png

    Is this the most logical way of doing this with the configuration I have?

    I am a DIYer and I’m confident to carry out the work, just would like guidance from those with better knowledge than I to make sure I’m doing this the most safe and sensible way.

    Thank you in advance
  2. terrymac

    terrymac Screwfix Select

    I would hope the garage installation is protected by an RCD, there isn't one in your pic.
    Your plan would appear to be fine ,as is your diagram of wiring ,although it shows nothing relating to the " second batten in loft space"
    R Stringer likes this.
  3. R Stringer

    R Stringer New Member

    Hi Terry,

    Thanks for your help. The RCD is in the consumer unit inside the house.


    Ah yes sorry, the diagram I’ve shown will be just for the floodlight at the minute. When funds allow for the batten lights, the plan will be to change the pendant switch to a 2 gang and run another 1.5mm twin and earth up the existing conduit to the second batten in the loft.

    I think this configuration allows me the room in the existing patress and conduit to add another gang for a second internal light in the loft when I can. I’d have to swap the wagos to 4 way connectors in that patress too.

    That all sounds ok doesn’t it?
  4. terrymac

    terrymac Screwfix Select

    Sounds fine. I would use a double pole switch for the external light . At some point in the future ,if it develops a fault ( water ingress for instance) that causes house RCD to trip ,you could isolate it .
    R Stringer likes this.
  5. R Stringer

    R Stringer New Member

  6. terrymac

    terrymac Screwfix Select

    Yes ,it is.
    R Stringer likes this.
  7. R Stringer

    R Stringer New Member

    Thanks for your help Terry

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