Looking for some advice, I have tested a property and on the ring main circuits the values do not tally up using the formula
(r1 + r2) / 4 = R1+R2
Although the R1+R2 tallys up using the formula
R1+R2 = Zs - Ze
Is this an actual fault that needs recording on a periodic ? I have been...
comlongon
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If a ring main is needed to be installed with one leg of the ring passing through a stud wall with thermal insulation (Inst. method 103#) the current carrying capacity is 13.5A. To comply with regs on a ring final circuit, the current carrying capacity has to be at least 20A for a 32A breaker...
Fairly new at testing, got .53 on end to end R1 and .52 Rn, but getting 1.20 om cpc this does not add up is it to to parralel paths bonding etc. Cheers
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