Altered ring main, now a DIFFERENT circuit is not working?

[dhclec]

I’ve just altered a ring main by taking 1 leg out of the board and taking it to a spur (then taking a leg back), to add a socket in. After doing so I’ve turned the board back on and everything is working as it should, other than cooker circuit (A radial feeding the cooker/hob, extractor fan and a heater. After checking ALL the connections in the board are ok and there are no exposed cables etc, I’m left baffled.

I only started out about 12 months ago so I’m not sure if this is just me being stupid and naive or if I need to call in some help. Any ideas?

 

[telectrix]

my bet is busbar behind cage clamp on non-working circuit.

 

[Welchyboy1]

You should hopefully just need a voltage tester to sort this one out with a bit of luck

1. Test you have 230v coming through live side of the mcb, if not ,either as said above you have not picked up the bus bar when re fixing it underneath the mcb, or mcb has failed to reset, may just need resetting may need to be replaced

If you can, get right under the cu with a torch and check the busbar connection is definatly in the mcb, wiggling the mcb is not sufficient, my money is also on this!

2. Double check the neutral connection for the circuit is tight at the cu bar, sometimes these are loose and you have disturbed it working on the board(make sure its tight, a loose nuetral on a cooker circuit is not good!)

3. If 1 and 2 are good go to the various points of your circuit that are not working and test for voltage between L-N, L-E
(What are these readings) although you have not been working on these items and should not be the problem the results may indicate a supply in but no neutral etc

4. If youve got power going out of the cu, but no power at any of these points then you have a broken/damaged circuit, loose connection or switch, isolator rcd, etc somewhere thats been over looked maybe?

Make sure you report back to what the problem was! Lol

 

[GBDamo]

Make sure you report back to what the problem was! Lol

No matter how embarrassing.

 

[Zerax]

No matter how embarrassing.

Especially if it's embarrassing !!

 

[DPG]

Have you got any actual test figures yet? What tester do you have?

 

[dhclec]

Breaker had broken. Busbar connection was fine, which is what a lot of people said it could be but it was live at the incoming terminal, dead at the outgoing. Breaker replaced, all sorted. Thanks to most for all your advice/comments

 

[DPG]

Glad to hear you found it. Out of interest what were your end-to-end figures for the ring circuit?

 

[Welchyboy1]

No problem..... invoice in post lol..

 

[Jjc]

Is the protective device definitely clamped to the busbar.

Why bother answering these questions?