Installed new floodlight problem

bery_451
bery_451 Posts: 1,807 Forumite
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in In my home (includes DIY) MoneySaving
Electrician installed this floodlight:

https://www.amazon.co.uk/gp/product/B076V9756Z/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

It didn't work at first so we changed the blown 13a fuse in the fuse spur to a 5a fuse however now it is so dim you can just about and see just each led cell dimly lit up.

Electrician saying either the floodlight is faulty or the wiring from the fused spur to floodlight is faulty.

How does one can tell the wiring from the fused spur to floodlight run is faulty? If so fault wouldn't the wiring be dead not live at all?
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Comments

  • roger-w5
    roger-w5 Posts: 70 Forumite
    Check the rotary switches on the control box,you probably already have but its worth a quick check.The voltage needs to be accurately checked inside the lamp's control box and if incorrect further checks at the fused spur.
    For a 13a fuse to safety fail ,we dont know why but have to assume it has been wired incorrectly damaging the lamp electronics,driver etc,A 3a fuse would have been more than adequate.

    If the wiring is correct i would personally buy a different product,timeguard led pir flood lights are Ok.


    .
  • Robin9
    Robin9 Posts: 12,091 Forumite
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    Potentially a wiring fault with the Neutral and Live reversed.
    Never pay on an estimated bill
  • bery_451
    bery_451 Posts: 1,807 Forumite
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    roger-w5 wrote: »
    Check the rotary switches on the control box,you probably already have but its worth a quick check.The voltage needs to be accurately checked inside the lamp's control box and if incorrect further checks at the fused spur.
    For a 13a fuse to safety fail ,we dont know why but have to assume it has been wired incorrectly damaging the lamp electronics,driver etc,A 3a fuse would have been more than adequate.

    If the wiring is correct i would personally buy a different product,timeguard led pir flood lights are Ok.


    .

    Ok if voltage is incorrect at lamp control box then what further checks at the fused spur are done?

    You mean wiring could have been done incorrectly at the lamp connection or the existing wiring run from fused spur all the way to outside?

    Can a 5a fuse cause any problems or shall i get 3a fuse?
  • Norman_Castle
    Norman_Castle Posts: 11,871 Forumite
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    edited 19 June 2018 at 3:59PM
    Electrician saying either the floodlight is faulty or the wiring from the fused spur to floodlight is faulty.
    An electrician should be able to check the wiring. Isn't that his job?

    Smaller fuses will fail sooner. I don't think being undersized can create a problem other than failing under load.


    In the image the wires appear blue, black and white. Has he guessed which is which?
    https://www.amazon.co.uk/gp/product/B076V9756Z/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
  • ciderboy2009
    ciderboy2009 Posts: 1,154 Forumite
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    The first review mentions there being a slight glow from the led's when the PIR hasn't been activated - has it been set up correctly?
  • bery_451
    bery_451 Posts: 1,807 Forumite
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    ciderboy2009 wrote: »
    The first review mentions there being a slight glow from the led's when the PIR hasn't been activated - has it been set up correctly?

    What is a PIR and how it is activated?
  • bery_451
    bery_451 Posts: 1,807 Forumite
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    Norman_Castle wrote: »
    An electrician should be able to check the wiring. Isn't that his job?

    Smaller fuses will fail sooner. I don't think being undersized can create a problem other than failing under load.


    In the image the wires appear blue, black and white. Has he guessed which is which?
    https://www.amazon.co.uk/gp/product/B076V9756Z/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

    Yeah he checked the wiring and said all wiring is ok and advised that the floodlight is faulty.

    So a 5a fuse is better than 3a fuse?

    When it comes to electrics guessing is not a good idea :eek:
  • Norman_Castle
    Norman_Castle Posts: 11,871 Forumite
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    bery_451 wrote: »

    So a 5a fuse is better than 3a fuse?
    Well, a 5a fuse will handle more current which is unlikely to be welcome if there's a short.

    Read the instructions, they will say what fuse is needed.
    No bigger than needed is better.
  • cajef
    cajef Posts: 6,266 Forumite
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    Looking at the specification it is only a 30 watt unit, a three amp fuse is more than adequate and all that is needed for that unit.
  • bery_451
    bery_451 Posts: 1,807 Forumite
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    so putting in a 3a fuse will make it work?
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