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Discuss Help - melted plug - why? in the DIY Electrical Forum area at ElectrciansForums.co.uk.

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  1. Dan White
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    Dan White EF Member

    Location:
    Somerset
    IMG_0414.JPG Hi - hope someone can help.

    First, quick bit of background. I clean ovens for a living and have a tank in the van for cleaning oven parts. It has a regular 240v imersion element in it which I heat up each morning.

    It's connected to an 13a extension cable which is plugged into an outdoor socket.

    The outdoor socket is connected to a plug socket inside the house (I drilled through the wall and plug the socket into the household socket. Not ideal, I know. But have been advised it's safe).

    Now as I'm lazy I fitted a wifi plug so I can turn it on from bed. It was on for about an hour each morning. I have left it on all night by accident a couple of times, it the element has a thermostat, so presume it wasn't running constantly.

    Checked the plug his morning and discovered that it had been getting very hot and had melted the plug to the socket. Everything worked, and nothing had tripped.

    Anyone know the likely cause?
     
  2. Pete999
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    Pete999 Trusted Advisor

    Location:
    Northampton
    Business Name:
    None
    Moulded plugtop probably a loose or damaged fuse holder, cut it off and fit a replacement, the socket looks like it needs replacing as well
     
    • Agree Agree x 3
  3. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    From the burn pattern it does appear to be the fuse part of the plug which has caused the damage.
     
    • Agree Agree x 2
    • Like Like x 1
  4. Dan White
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    Dan White EF Member

    Location:
    Somerset
    So def nothing todo with wifi plug (it only turns off 'neutral', so live and earth are always connected and 'open'.?
     
  5. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    How many kw is the heater.
     
  6. Dan White
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    Dan White EF Member

    Location:
    Somerset
    Yeah, only the fuse area is damaged - the pins are all perfect.

    IMG_0415.JPG
     
    • Like Like x 1
  7. Pete999
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    Pete999 Trusted Advisor

    Location:
    Northampton
    Business Name:
    None
    Only turns OFF the N how come? could have something to do with the problem, not sure how or why just yet, the switch in single poll circuit should be in the phase conductor. For some reason you say the N is switched, needs sorting PDQ
     
  8. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    What kw is the heater.
     
  9. Dan White
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    Dan White EF Member

    Location:
    Somerset
  10. Dan White
    Offline

    Dan White EF Member

    Location:
    Somerset

    That's how the wifi socket works. I only noticed as I connected my campervan to the outdoor socket extension - then tested the camper sockets prior to us going away in it. The tester said there was no N. It came on when I realised I hadn't turned the wifi socket on. And that's when I discovered the melted plug. (Hope that makes sense)!
     
  11. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    You sure you have correct polarity at the socket.
     
    • Agree Agree x 1
  12. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    If that is loading the plug at 3kw you are over loading it.
     
  13. Dan White
    Offline

    Dan White EF Member

    Location:
    Somerset
    Arse. So what's best practice?
     
  14. Dan White
    Offline

    Dan White EF Member

    Location:
    Somerset
    IMG_0417.JPG
     
  15. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    At least we know that Kieron never installed the outdoor socket, 'cos its not flushed in :)
     
    • Funny Funny x 6
    • Like Like x 2
    • Agree Agree x 1
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