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.
Thank you geoffd .I am fixing some defects following EICR done by others. I noticed that they picked up a ring circuit on 16A but did not on 20 A. So I thought I check but those 2 pages in Onsite guide confused me. I do not know this A1 20A is relevant in the book and do not see the point. Thank you
A1 is the standard ring final circuit - 30A/32A with 2.5mm² T&E cable.
It is not an A1 20A circuit. It is just that you are looking at the conductor size H2.3 section as well.
The two legs must be a minimum of 20A CCC (although it states that the minimum size (except MICC) must be 2.5mm²; this still relates to a BS3036 30A fuse being used).
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