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Why A 3A Fuse Protecting Gas-Related Electrical Circuits?

Discussion in 'Plumbing and Central Heating' started by securespark, 6 Feb 2018.

  1. securespark

    securespark

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    Big debate raging on Electrics UK...
    Is it written in Gas Regs, or just manufacturer's recommendations?

    Cheers, people!
     
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  3. ReganAndCarter

    ReganAndCarter

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    EDIT - Didn't read question properly.
     
    Last edited: 6 Feb 2018
  4. ban-all-sheds

    ban-all-sheds

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    The reason, or how justified it is, is a separate issue.

    It would be good to know if it is actually a requirement in the gas regulations.
     
  5. Dan Robinson

    Dan Robinson

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    It's a requirement of the manufacturer's instructions.
     
  6. muggles

    muggles

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    ...which over-ride gas regulations
     
  7. Dan Robinson

    Dan Robinson

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    Indeed :D.
     
  8. Dan Robinson

    Dan Robinson

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    Kind of :D :D
     
  9. ban-all-sheds

    ban-all-sheds

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    But what does that mean?

    Does it mean that an MI can allow things otherwise not allowed by the gas regulations?

    Is it relevant to this - wouldn't "over-ride" only matter if the gas regs forbade a 3A fuse but the MI required it? Otherwise what gas reg(s) would the MI be overriding?
     
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  11. gasbanni

    gasbanni

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    No not really overide the gas regs, but the manufacturers instructions are paramount they've manufactured the product, had it tested and certified so as regarding the appliance their instructions are the ones that are adhered to, there's not usually a conflict between the gas regs and Mi but if there is Mi take precedence.
     
  12. ban-all-sheds

    ban-all-sheds

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    For some reason (bear with me and I'll try to come up with an excuse) I missed this off my last post:

    What do the gas regs actually say about following MIs?

    The wiring regs used to say "Electrical equipment shall be installed in accordance with the instructions provided by the manufacturer of the equipment".

    That got changed a while ago to "The installation of electrical equipment shall take account of manufacturers’ instructions", which is not as prescriptive, and I was wondering how it is with gas things.
     
  13. securespark

    securespark

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    Vino Collapso?
     
  14. ban-all-sheds

    ban-all-sheds

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    This appears to be the current understanding:
    1. There are no requirements in the Wiring Regulations for gas appliance supplies to be fused at 3A.
    2. There are no requirements in any gas regulations for gas appliance supplies to be fused at 3A.
    3. The Wiring Regulations do not make it mandatory to abide by any manufacturer instructions.
    4. The Gas Safety (Installation and Use) Regulations (I'm assuming it is they) do make it mandatory to abide by any manufacturer instructions.
    5. Some gas appliance manufacturers require 3A fusing in the UK.
    6. Some gas appliance manufacturers do not require 3A fusing outside the UK.
    7. Nobody knows why #5 is justified, particularly when #6 applies to the same appliance sold elsewhere.
    8. Notwithstanding #7, #4 means that observing #5 is not optional.
     
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  15. Wildcat1961

    Wildcat1961

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    Depending upon auxiliary equipment used then a fuse rated @ 5 amps will be required.
     
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  16. Dan Robinson

    Dan Robinson

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  17. ban-all-sheds

    ban-all-sheds

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    Isn't that a bit tricky if the MI mandates 3A, and the regulations mandate doing what the MI says?
     
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