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16amp blue socket wired off a socket spur

Discussion in 'Electrics UK' started by mic2876uk, 7 Feb 2021.

  1. mic2876uk

    mic2876uk

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    Hello,

    Is it allowed to wire a blue 16amp socket as a spur off a ring main?

    Would be used for a welder
     
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  3. danechip

    danechip

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    Uhm. No lol.
     
  4. mic2876uk

    mic2876uk

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    What is the reason as the 2.5mm twin and earth can supply in excess of 16amp and it it's not impossible for someone to plug in 2 2kW appliances into a double socket that is on a spur. Dispite the fact that you shouldn't.

    Presumably it's because the blue 16amp plugs don't have Fuses?
     
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  5. blup

    blup

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    It’s about the current draw and breaker capacity as well.

    Blup
     
  6. mic2876uk

    mic2876uk

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    Ok another question then.

    I want to have 2 16amp sockets in the garage so I can move the welder about. Can these both be wired as 2 separate radials from the same 16amp MCB? I know this means they both cannot be used at the same time but I'm a little stuck with space in the CU
     
  7. bernardgreen

    bernardgreen

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    Be aware that using a welder on a domestic supply is likely to be in breach of the contract with the DNO

    They can ( and often do ) cause voltage dips in the local supply network and neighbour's complaints to the DNO can lead to an instruction to cease using the welder or risk having the supply disconnected.


    welder app.jpg
     
  8. Taylortwocities

    Taylortwocities

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    Need a little more information. How is the garage supplied with power. Is there a separate MCB in the house consumer unit? What value is the MCB?
    Or is it supplied from another circuit in the house, perhaps through a FCU?
     
  9. mic2876uk

    mic2876uk

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  11. mic2876uk

    mic2876uk

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    It is supplied by 3 core 6mm SWA. It is connected in the house to a 40amp MCB.

    The garage has a metal clad split load RCD CU
     

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  12. bernardgreen

    bernardgreen

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  13. mic2876uk

    mic2876uk

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  14. danechip

    danechip

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    No LOL
     
  15. mic2876uk

    mic2876uk

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    Thanks. As I said I will wire it on its own 16amp circuit
     
  16. danechip

    danechip

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    So then it is not a spur then is it, It is not on a ring 'main' Is it.

    Attached to the CU fused down to 16A in the garage will be fine.
     
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  17. mic2876uk

    mic2876uk

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    The reason for my first question was I was hoping to save on cabling by spuring it. But as you said that is not good practice I will now run it as a separate circuit
     
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