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I can spot one fault straight away, probably what is causing the tripping problem too.
Discuss trouble with newly installed MK c/u in the Australia area at ElectriciansForums.net
I can spot one fault straight away, probably what is causing the tripping problem too.
thats the way it came :/ never used an mk board before
me too. the main switchy is on gthe wrong side of the board. :hurray:
Remove the copper link and this should solve the problem.
How can the main switchy go on the other side of the board, the L-N poles wouldn't allow you to do that....
A picture is worth a thousand words..... (even a very small picture!!!!)
View attachment 8089
Ver...,ever heard of irony?
Then i suggest, the main isolator is in the correct position as shown in the photo.[/QUOTEi looked at it again through a mirror. all correct now. LOL.
it'a a bad layout anyway, as he has only 4 N terminals for the 5 RCD circuits.
Yep, absolute pain with MK boards!How can the main switchy go on the other side of the board, the L-N poles wouldn't allow you to do that....
Well that's given the game awayJenions the neutral link is present in the board so that you can put more circuits on one side of the CU and use the third unlinked neutral for another RCD. Because of the circuits design you have, you only need two circuits on the first neutral bar so there is no need to use the link. If the link is left in the current in the neutral can bypass the RCD so it sees a difference in current between line and neutral current and trips. Remove the copper link and this should solve the problem.
Could it be a combined earth leakage issue as it only happens when sufficient load has been applied? Have you ramp tested the RCD and used an earth leakage meter to see? Possibly a certain appliance causing the issue - freezer maybe?annoying thing is, the rcd dont trip if you plug small loads in
Could it be a combined earth leakage issue as it only happens when sufficient load has been applied? Have you ramp tested the RCD and used an earth leakage meter to see? Possibly a certain appliance causing the issue - freezer maybe? That's what came to my mind when you mention the IR results were ok?annoying thing is, the rcd dont trip if you plug small loads in
You can, as with MCBs, put more than one circuit into an RCBO but it's not good practice.
There's always one, and it ONLY becomes one circuit when you install THEM into the MCB so I stand by what I saidNot technically possible as it then becomes one circuit. So you could have multiple cores rather than multiple circuits in the protective device.
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