1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Replacing a Fluorescent Fitting with an HF one

Discussion in 'Electrics UK' started by StephenW, 1 Nov 2011.

  1. StephenW

    StephenW

    Joined:
    9 Jul 2009
    Messages:
    272
    Thanks Received:
    40
    Location:
    Buckinghamshire
    Country:
    United Kingdom
    (I'm peering around the edge of the wall as I write this in case you shoot me! ;) ;) )

    My single garage is lit by two twin-five-foot fluorescent fittings which I got and fitted many (20?) years ago as they were being thrown out at work. They are wired in parallel on a two-way switch.
    One of the fittings has now failed (not the tube or the starter) so I will replace it.
    I have been given a new fitting (twin four-foot) which is new but it is high frequency. I read the instruction leaflet (!) and it mentioned there that you shouldn't fit HF and 'traditional' on the same circuit as it could damage the HF's electronics.
    Now I know as well as anyone that instructions such as this can often be a back-covering exercise and that the symptoms mentioned might occur once in a blue moon - or they might be the rule rather than the exception.
    So, am I likely to damage the fitting by wiring it in place of the old one or is it unlikely (if still possible)?
    If the likelyhood of damage is high then I'll fit the HF up in the loft and put the current loft fluorescent (single 5 foot traditional) in the garage.
    Thanks.
     
  2. ricicle

    ricicle

    Joined:
    14 Sep 2006
    Messages:
    6,343
    Thanks Received:
    382
    Location:
    Gloucestershire
    Country:
    United Kingdom
    There is a possibility that the large voltages induced by a switch-start ballast could upset the electronic control gear on a HF fitting on the same circuit.
     
  3. Sponsored Links
  4. 333rocky333

    333rocky333

    Joined:
    12 Jan 2008
    Messages:
    7,598
    Thanks Received:
    750
    Location:
    Essex
    Country:
    United Kingdom
    Seen it done loads of times in retail and commercial properties, never heard of it being a problem though,

    Its likely your 20 year old light has a capacitor across the supply which may, as well as balance the power factor, could help supress the supply a bit.
     
  5. StephenW

    StephenW

    Joined:
    9 Jul 2009
    Messages:
    272
    Thanks Received:
    40
    Location:
    Buckinghamshire
    Country:
    United Kingdom
    Thanks chaps - I might just give it a try.
     
  6. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
  7. Sponsored Links
Loading...

Share This Page