The other factor is dealing with the 17th edition requirement for the cable to be RCD protected, or buried 50mm deep, or in earthed metal conduit or using cable to BS 8436. My understanding is that that the RCD only protects for up stream faults, so an RCD in the socket outlet is no good for faults in the cable run to the outlet.
Terminating SWA in knockout box outside a plastic CU
- Thread starter f0rmula
- Start date
The other factor is dealing with the 17th edition requirement for the cable to be RCD protected, or buried 50mm deep, or in earthed metal conduit or using cable to BS 8436. My understanding is that that the RCD only protects for up stream faults, so an RCD in the socket outlet is no good for faults in the cable run to the outlet.
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That would be a relevant factor were it not for the fact (the title of this thread is a clue!) that the cable is going to be SWA all the way back to the CU.
Kind Regards, John
Or visible.
The cable will be up-stream.
The protection is down-stream.
That's correct.
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Yeah, reading comprehension fail there, and I realized shortly afterwards. However there is in there another option that gets rid of the need to terminate SWA in the plastic CU which is to use BS 8436 flex from the consumer unit to the outside sockets. The viability of which would depend on how much cable will be running outside (I personally like to keep this to zero) and whether conduit would be acceptable.
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