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Table 52.3. Could someone explain it to me, again, please!

I've done an EICR this morning, all in perfect condition, apart from two Code 3's, a plastic CU, and a boiler supply on a 1mm T+E cable.

I've marked it as a '3', as Table 52.3 says a 'power circuit' , should be supplied by a minimum conductor size of 1.5mm.

This circuit is protected by a 6 amp, type B circuit breaker, and further on, a 3 amp BS1363 fuse.

So there is no safety issue at all.


Has it ever been explained why this table has been included, and why these figures are used?
Parents
  • It's a bit like saying that a "power circuit" (are there any circuits which do not transmit power?) cannot be rated at less than 10 A i.e. the lowest rated configuration for 1.5 mm² cable in Tables 4D*.


    In fact 1.5 mm² T&E is no use for a power circuit because the CPC is only 1.0 mm² (524.1) unless it is a spur using an FCU (Appendix 15).


    Regarding EICRs, I would suggest that an installation complies if it has been inspected and tested i.a.w. Part 6 and nothing worse than C3 has been found.
Reply
  • It's a bit like saying that a "power circuit" (are there any circuits which do not transmit power?) cannot be rated at less than 10 A i.e. the lowest rated configuration for 1.5 mm² cable in Tables 4D*.


    In fact 1.5 mm² T&E is no use for a power circuit because the CPC is only 1.0 mm² (524.1) unless it is a spur using an FCU (Appendix 15).


    Regarding EICRs, I would suggest that an installation complies if it has been inspected and tested i.a.w. Part 6 and nothing worse than C3 has been found.
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