Is this a mistake in the Onsite guide?

Question

Hi To all. I do not have the Regs AMD2 yet so I cant check. Is this a mistake? in Onsite guide P211 .It says a) 20A for ring circuit A1 then on P210 Table H2.1 A1 ring 30 or32 A.

David Stone · Accepted Answer

Ozz, that is not a defect, and is perfectly permitted! There may be reasons why this is there, usually that some part of a ring is of a smaller cable size or there are too many sockets on a spur. I would point out that the onsite guide is completely useless for inspection, a very much higher standard of knowledge of the regs is required, and the onsite guide only contains a set of suggestions which may well be over-engineered but are "safe" without further consideration. A smaller Circuit Protective Device (CPD) is not in any way dangerous, although it could be nuisance, that is all.

Is this a mistake in the Onsite guide?

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