Possible borrowed neutral ring mains

[TJC1]

Done a fuse board change on a propery, hasnt been touch since early 60s at a guess.

There is 2 ring mains, which i had split over the the 2 rcds. Each time i swithched on one, the other RCD tripped out, and vise versa.

Have no end to end on one ring main, and end to end on Line & Earth but not the neutral on the other ring.

To get it going for the weekend i put both rings on one RCD, but still tripped out.

Does this sound like a borrowed neutral problem, or a inter crossed ring main?

 

[westward10]

Test first, some never learn. How can you replace a CU when you have no idea of circuit configuration, never assume because you see a pair on a device it is a ring final.

 

[7029 dave]

Yes some testing in order, IR on both circuits, but he needs to find both breaks on N if it is on a 32amp circuit, and get end to end on all conductors. L N E

 

[sparksburnout]

Well well well we're feeling the Christmas spirit in here today. Surely given the OPs responses the only reply he should be getting is 'come back when you have a set of test results'?

Well HT, forgive me if I am misconstruing your comment about Xmas spirit, but it looks to me like this guy is masquerading as a competent person, charging his customer likewise, when really he is a bit clueless? Like Murdoch has said, how is the poor old customer doing out of all this? Just saying...

 

[sparksburnout]

Think he is saying, maybe interconnection between both circuits.?

Would that be like getting the neutrals mixed up??

 

[7029 dave]

That's if they are genuine RFC, could be radials lumped up.?

 

[7029 dave]

Would that be like getting the neutrals mixed up??

No , before I tell you , do you know what an interconnection means between two circuits.?

 

[Octopus]

I bet the op didn't sketch as layout of the property before he started to work out and confirm what is on what circuit.

 

[sparksburnout]

No , before I tell you , do you know what an interconnection means between two circuits.?

Not quite sure I am getting the drift here SSE. I do, yes, maybe the OP not so much, given the fairly obvious problem he has got, as Murdoch is alluding to. It ain't rocket science, for an electrical contractor?

 

[7029 dave]

Not quite sure I am getting the drift here SSE. I do, yes, maybe the OP not so much, given the fairly obvious problem he has got, as Murdoch is alluding to. It ain't rocket science, for an electrical contractor?

Okay that's good Sparks, will spare the lecture.

 

[sparksburnout]

Okay that's good Sparks, will spare the lecture.

Ah sorry I was being a bit facetious. No lecture needed!

 

[7029 dave]

Ah sorry I was being a bit facetious. No lecture needed!

No worries Sparks, only trying to be helpful, and try and pass on my wealth of experience to others here. I do enjoy it.!

 

[westward10]

Sixties house possibly only one ring final anyway.

 

[sparksburnout]

No worries Sparks, only trying to be helpful, and try and pass on my wealth of experience to others here. I do enjoy it.!

I know, and it is appreciated, and if you would enjoy it, please feel free to do it anyway. Maybe it would pass the long hours, while we wait for the test results to come though?

 

[westward10]

I know, and it is appreciated, and if you would enjoy it, please feel free to do it anyway. Maybe it would pass the long hours, while we wait for the test results to come though?

Break it up you two.

 

[sparksburnout]

Sixties house possibly only one ring final anyway.

??? we are just having a bit if a titter? Well I was. I was, honest. I know Dave knows what interconnected things are, and I know he knows that I know what they are as well. That's it, really. Happy days. Bet that poor sod wishes he never had his fusebox replaced anyway......Oooerr I seem to have quoted the wrong bit now, apologies.