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3 core plus earth to 2 core led panel

Discussion in 'Electrics UK' started by Ina2raj, 5 Oct 2020.

  1. Ina2raj

    Ina2raj

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    Hi
    I am replacing a commercial fluorescent tube light fixture with a LED panel on a suspended ceiling. I've done a few which were simple connection but noted one of the fixture is connected with a 3 core plus earth cable. The black wire is mentioned on a sticker with a warning as an unswitched supply.
    What does that mean and how can I connect it to 2core led panel. Thanks
     
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  3. plugwash

    plugwash

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    An unswitched supply means what it says, a supply that is not switched on and off. Typically such a line would be associated with emergency lighting provision,
     
  4. sparkwright

    sparkwright

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    How is it currently wired?

    If it's connected to something, it may be a light with an emergency light built into it.

    In which case it sounds like your new light is incorrect...
     
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  5. Ina2raj

    Ina2raj

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    Thanks I think it is a built-in emergency light because when I switched the MCB from mains one of the tubes was still lighting. But how do I replace it with an LED panel
     
  6. ericmark

    ericmark

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    With a LED Panel Light with Emergency Battery Backup, which will have the same connections. Or put permanent line in a connector block and don't use it.
     
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  8. chivers67

    chivers67

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    Is this inside a Commercial property / building? Is there a flick test switch in the circuit?


    [​IMG]
     
  9. 333rocky333

    333rocky333

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    Its an emergency light for a reason, you should not remove it, you either get an emergency version of your led panels or fit your normal led panel and a standalone seperate Emergency fitting.
    If its a commercial premises then it needs doing right
     
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  10. bernardgreen

    bernardgreen

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    If this is in a commercial building or an HMO ( House of Multiple Occupancy ) ( as Chivers mentioned ) then it is likely to be a LEGAL requirement that this lamp does light up when there is a mains failure/
     
  11. conny

    conny

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    And if the OP is the person fitting it in a commercial or HMO property, then he is clearly not qualified to do so if he is asking questions on here.
     
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