For some reason I am unable to access the wiring and regulations forumn, so I have decided to throw this questions to the wolves. I have asked this question to a number of people and continue to get conflicting answers
Yes or No. Is the circuit below compliant with BS7671 taking into consideration table 41.3 and table 41.5 of BS7671
2.5mm ring circuit approx 60meters long
Earthing arrangment - TNC-S
Ze - Unknown
Circuit Protective Device - BS EN 61009-1 C32A 30mA RCBO 10k
Measured Zs 1.86ohms
Max allowable Zs within GN3 0.62ohms
Regulation 411.4.9 states that where an RCD has been used to satisfy the requirements of Regulation 411.3.2.2, the maximum values of earth loop impedance (Zs) in Table 41.5 may be applied for non delayed RCDs to BS EN 61009-1
