For a standard domestic Install, split board with 2x Type AC main switches.
No PV or Car Chargers should this be a C3 or C2?
Thanks in advance
For a standard domestic Install, split board with 2x Type AC main switches.
No PV or Car Chargers should this be a C3 or C2?
Thanks in advance
Neither.
If it requires a code, please state where the non-compliance lies.
please state where the non-compliance lies.
531.3.3 last sentence "RCD Type AC shall only be use to serve fixed equipment, where it is known that the load current contains no DC components."
- Andy.
So , only code (and even then only to C3) if there any fixed equipment like that ? OP does not mention it, and anything with a plug on it, is not fixed equipment ...
Otherwise at that point it's notes and observations only.
Mike.
That sentence is, at the very least, ambiguous.
Does it mean that Type AC may only be used to serve fixed equipment, so not socket outlets at all; or does it mean that if it is used to serve fixed equipment, it may do so only where there are no DC components?
Incidentally, my new next-door neighbour mentioned this last week, so there may be a common misconception that Type AC are no longer permitted.
That sentence is, at the very least, ambiguous.
Agreed. - I was thinking the same as I was copying it out...
I think (given the context of the rest of the regulation) I think it's meant to be read as "RCD Type AC shall only be used to serve fixed equipment and then only where it is known that the load current contains no DC components (otherwise you can't be sure that you're meeting the requirement that 'The appropriate RCD shall be selected' from earlier in the same reg)"
to read it as ""RCD Type AC shall only be used to serve fixed equipment where it is known that the load current contains no DC components.(but may be used to supply non-fixed equipment with impunity)" you'd have to loose that subtle comma in the middle of the original sentence at least.But that's damn subtle use of English for something that's meant to be clear and definitive for the likes of us.
- Andy.
I am inclined to agree concerning the comma.
If the second clause is subordinate to the first, it should be possible to stop at the comma and still have a sentence which makes sense. It does.
It also helps to have a look at the Big Blue Book, which said, "For general purposes, Type AC RCDs may be used." The fact that it no longer says that suggests that they may no longer be used for general purposes.
A couple of lawyers could have great fun arguing this point.
What is the cost difference for the average RCD type AC against a Type A? Especially considering RCBO
What is the cost difference for the average RCD type AC against a Type A? Especially considering RCBO
3/8 of b*****r all, I should think.
a lot to more cost to change it if its already installed though - this question was about an EICR.
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