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Discuss BS7671:2018 in the Electrical Wiring, Theories and Regulations area at ElectrciansForums.co.uk.

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  1. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    Last edited: Jan 11, 2017
  2. Andy78
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    Andy78 Trusted Advisor

    Location:
    Kingston upon Hull
    Thanks very much Midwest, some to go at for homework :)
     
  3. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    If you understand it, can you let me know :)
     
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  4. Andy78
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    Andy78 Trusted Advisor

    Location:
    Kingston upon Hull
    Well what I seem to have gleaned so far is they work similarly to an RCD, do much the same job, but can't be easily tested for correct operation. They will expand the size of a CU considerably, increase the cost even more, possibly be the cause of frequent nuisance tripping, and they are not even proven to work properly.

    I can see some stern opposition from those more knowledgeable than me when the public draft comes out.
     
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  5. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    See now I thought it was all those plastic CU's causing the fires!

    Seems the AFDD, fills the gap between MCB & RCD, and primarily used on socket final circuits, but not exclusively.

    I note the Siemens vid shows a corded drill arcing & sparking, causing a AF. We'll all have to go cordless. :)
     
  6. Rob
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    Rob Trusted Advisor

    Location:
    North west
    The americans have been using them as part of the NEC for a while. In a word they are sh!t.

    The yanks don't do testing, but there is no way outside a lab they can be tested if they are working properly.
     
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  7. westward10
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    westward10 Ugly kids what a disappointment. Electrician's Arms

    Location:
    Northamptonshire
    Just logged onto IET website and can't find a dicky bird about it, unless was looking in wrong place.
     
  8. spinlondon
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    spinlondon Trusted Advisor

    Location:
    Harlow Essex
    As far as I am aware, they do not work.
     
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  9. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    You should read OP perhaps.
     
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  10. westward10
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    westward10 Ugly kids what a disappointment. Electrician's Arms

    Location:
    Northamptonshire
    It's me age:)
     
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  11. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    Know what ya mean.
     
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