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Thanks for reply, yup double pole 80A mcb type C (part no S292C80A), made by ABB, cost around £45. Sounds like the way to go. Colin

Did sort of ask this in another post about moving the consumer unit further from the meter (4 metres), but got a mixed response. Anyone else have ideas why i shouldnt use an 80A dp mcb to isolate by consumer unit, rather than using a switch and a fuse. Thanks for any help

ok, afraid you lost me, whats cpc. Do know the mcb i'm looking at is 10kA. Do you think the problem is it would trip too slow or too fast when compared with a fuse. I just thought this would be a better option than a fuse (safer and cheaper).

Found a 80A dp or 100A dp MCB (type C), any reason I shouldnt use that as an isolator instead of switch and fuse (its cheaper to).

OK thanks for the info.

I agree, the advice from the REC was stupid, why I was so pleased to find this forum and get proper advice. Again from what I have read in this forum, 25mm tails are the way to go, the existing service fuse is marked 60/80A (havent actually pulled the fuse to see what value is inside). Any...

Great Forum by the way, found out loads of info - thanks to all. i'm installing a new consumer unit about 3.5m away from the meter. Having read other posts on this subject I see its recommended to fit a 100A dp isolator at the meter together with a fuse, no problem with the isolator, but...