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Discuss Help needed with hob fault in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. Billythekid
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    Billythekid Regular EF Member

    Just been to look at a hob that has been getting hot above the electrical / gas connections. I was unfortunately unable to locate the source of the problem.

    No visible damage to cables,
    Zs fine,
    RCD checked out fine,
    IR >999 @500v,
    And is still fully operational.

    I’m Baffled, any ideas?

    69726D85-A619-4C8A-8EBF-22160FF8F3F9.jpeg

    28C21AAD-7E66-4711-A6CF-253A4157376A.jpeg

    16CBB765-7E7F-4267-9E02-61BA9CB8CEA6.jpeg
     
  2. Leesparkykent
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    Leesparkykent Super Moderator Staff Member Super Moderator

    Location:
    Kent
    Scrap it and get a new one.
     
    • Agree Agree x 4
    • Like Like x 1
  3. SparkyChick
    Online

    SparkyChick Making a banana smoothy for my fave gorilla Staff Member Moderator

    Location:
    South Wales
    Business Name:
    SparkyChick
    Did it actually get hot whilst you were there?

    There looks to have been a sticker in that location... could have burned by something placed on it???

    I wouldn't have thought that supply (assuming it's fused properly) would be able to deliver enough power to cause that.
     
    • Like Like x 1
  4. Pete999
    Online

    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
    None
    Heat rises, hence anything above the heat source will receive a rise in temperature and get hot, simple physics in essence.
     
    • Like Like x 1
  5. Billythekid
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    Billythekid Regular EF Member

    Yeah, they are going to buy a new one anyway, but I don’t like leaving without finding the cause. No damage anywhere other than under the sticker - I have a video of my nephew pouring a little water on it - and it boiled?
     
  6. SparkyChick
    Online

    SparkyChick Making a banana smoothy for my fave gorilla Staff Member Moderator

    Location:
    South Wales
    Business Name:
    SparkyChick
    I know you probably won't be able to answer these...

    With the power off did it cool down?

    With the gas off did it cool down? It's more over the gas inlet... is it possible there is a leak that has been ignited and is slowly cooking the cooker from the inside???

    Really grasping for ideas I know :D
     
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  7. Murdoch
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    Murdoch Electrician's Arms

    Location:
    Woking
    Did you take it out and inspect the connections? Looks like a classic case of a loose connection to me
     
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  8. Billythekid
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    Billythekid Regular EF Member

    No sign of thermal damage underneath. I was also clutching at straws, just as I was leaving I remembered the oven had been removed and had a metal case that could’ve been touching the gas pipe, so I checked that too - all fine.

    The picture doesn’t show the mark very well, but it looks like an arc welder has been used on the casing.

    I was unable to replicate the fault - I turned the gas back on, used all the hobs. Installed the oven and put that on too.

    Water bonded, gas bonded - all tests were as you’d expect them to be?
     
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  9. Billythekid
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    Billythekid Regular EF Member

    They turned the gas and electricity off, and yes it cooled down - just cannot get it to heat up again now.
     
  10. Billythekid
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    Billythekid Regular EF Member

    Yeah, I checked underneath. I would’ve liked to have removed it but there is no isolation point for the gas.
     
  11. 123
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    123 Electrician's Arms

    On a gas hob really?

    It looks like a burnt sticker to me. Never the less, I've never seen a loose connection burn through stainless steel from the connection block below.
     
    • Like Like x 1
  12. telectrix
    Online

    telectrix Scouser and Proud of It Respected Member

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    bloody obvious to me. it's where an alien spacecraft landed, bearing in mind that it was from a planet where the inhabitants are only 2" tall by earth standards.
     
    • Funny Funny x 3
  13. Billythekid
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    Billythekid Regular EF Member

    I’ve seen similar marks before but there has always been a logical explanation.

    I was beginning to think of an external issue, but nothing else has been damaged - usually TV’s, boilers, programmers, etc are damaged too.
     
  14. Billythekid
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    Billythekid Regular EF Member

    More plausible than anything I can think of right now.
     
    • Agree Agree x 1
  15. Pete999
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    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
    None
    Wrong Tel, it's a Phaser burn, probably set on Stun
     
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