Discuss Garage consumer unit in the Electrical Forum area at ElectriciansForums.net
Not if they are plastic.Do the water pipes in the garage need bonding?
He is runing the swa from dual rcd cu.The house is TNCS, and the cable run to the garage approx 25m. Yes water at the garage. As the swa is not feeding any sockets or lights direct but is via a garage consumer unit I don't see why it requires a 30ma rcd at the house. If someone were to get a shock in the garage it would trip the rcd in the house and could be reset by someone in the house unaware why it's triped. Hence the 30ma rcd at the garage.
What do you mean by it not an 'AC' final circuit? ?Thanks for the replies, but what I am asking is about the protection feeding the garage consumer unit? The garage consumer unit has a 30ma rcd and 2 mcb's for lights and sockets. What I don't want is a 30ma rcd feeding another 30ma rcd from the house to the garage. As this is a domestic premises reg 411.3.3 requires additional protection for sockets not exceeding 32A via a 30ma rcd. And reg 411.3.4 requires that AC final ciruits with luminaries requires additional protection via 30ma rcd. As this is not an "AC final circuit" I'm asking what is normally best practice. As it will be a clean run of SWA cable between the 2 is it best to use a switch fuse from the house to the garage or a 100ma rcd and mcb. My thoughts are that an rcd would be the better option. Yes the garage can be a TT system.
Yes true that but the op should know that the two cicuits in the garage are AC final circuits.I think he means the garage feed is a submain, not a final circuit.
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