hi started to study for my 18th, wots you guys think the answer is, something tells me it’s different to wots on the answer sheet
I think D and A are the same conductor, namely the big CPC for the whole site - I'd not use any term with 'bond'' in the name. The fact it has a MET (Main or Marshalling Earth Terminal )part way along does not alter the primary function of being the thing the ADS in the consumer unit depends on - cut either and you cannot be sure that fuses blow any more.
The plumbing bonds could have joined at the CU end or at the incomer end and not alter that.
Equally I'd not say someone was wrong if they referred to either A or D as the "main earth" - just as long as they did no slip in the word 'bond', . not a question with clear cut 'always right' answer so rather a nasty one.
Mike.
I think D and A are the same conductor, namely the big CPC for the whole site - I'd not use any term with 'bond'' in the name. The fact it has a MET (Main or Marshalling Earth Terminal )part way along does not alter the primary function of being the thing the ADS in the consumer unit depends on - cut either and you cannot be sure that fuses blow any more.
The plumbing bonds could have joined at the CU end or at the incomer end and not alter that.
Equally I'd not say someone was wrong if they referred to either A or D as the "main earth" - just as long as they did no slip in the word 'bond', . not a question with clear cut 'always right' answer so rather a nasty one.
Mike.
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