I am installing an outside socket which will spurring off a ring main, this is protected with a standard rcd at the Dis Board, but the ring main also runs around a workshop with individual rcd sockets at every work bench (x10) the question is how do i do a installation resistance test? do i have to take every rcd socket off and link through or do i put a limatation on the minor work test sheet?
testing question
- Thread starter markymark2406
- Start date
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You have to remove each socket front and link out.
Why are there 2 RCDs in series? That is not good circuit design.
Could you supply your new socket from an alternative compliant circuit?
Why are there 2 RCDs in series? That is not good circuit design.
Could you supply your new socket from an alternative compliant circuit?
yes it is a silly way of doinf things dont know why the customer has done this, so i will have to take every rcd plate off and link through bummer?
RF What you on tonight?
"Why are there 2 RCDs in series? That is not good circuit design. "
OSG Fig 3a ??????????????????????????????
Must admit Mark did not detail what the set up was
"Why are there 2 RCDs in series? That is not good circuit design. "
OSG Fig 3a ??????????????????????????????
Must admit Mark did not detail what the set up was
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You may have more to worry about that tripping the RCD if you subject it to a 500v IR test!
You're talking about earth fault loop impedance testing, unlike IR testing being talked about here.
Bri
You still using a crank-up megger?
You still using a crank-up megger?
It isn't considered good practice to have two RCDs of the same rating protecting the same circuit as they won't discriminate, however in some situations it is unavoidable. Basically if the RCD protecting the whole circuit is a 30mA then the person has wasted a fair bit of cash installing a load of SRCBOs in his workshop.
But in a workshop it would be bad practise for machines to restart after power failure.
NON - latching sockets in the workshop, would not be a waste of money but sensible.
As they will not reset till after the main one
LATCHING main one would be wise and if that tripped someone resetting it would not endanger the people in the workshop who by now would be poking around with the blade or something.
NON - latching sockets in the workshop, would not be a waste of money but sensible.
As they will not reset till after the main one
LATCHING main one would be wise and if that tripped someone resetting it would not endanger the people in the workshop who by now would be poking around with the blade or something.
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