Advice on poor standard on electrical work i've had carried out.
- Thread starter Tirglas_7
- Start date
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Hmm.
Judging by the rest of his work, I wouldn't bet on the inside of the CU not being a bit of a rat's nest.
Anyway - there's more to doing this sort of work than just being electrically safe, and (right now) it looks like the guy who subbed the work to him has kicked him into touch and is going to sort the problems.
Judging by the rest of his work, I wouldn't bet on the inside of the CU not being a bit of a rat's nest.
Anyway - there's more to doing this sort of work than just being electrically safe, and (right now) it looks like the guy who subbed the work to him has kicked him into touch and is going to sort the problems.
I suppose the cable has a CCC of 20A or greater.
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Whilst I agree with you that 6A would be more than enough, I'm sure that some people would say that the MCB is there only to protect the cable, so that if the cable's CCC is no less than 20A, then "why not?" a 20A MCB!
Kind Regards, John
Very true, but unusual all the same. To be quite honest the boiler does not need its own circuit anyway.
Because it's a better job - this way a socket could be added in the future.
Might even be an old immersion circuit in a house that has had a new boiler system.
Do I take it that you don't subscribe to the view that the MCB is there only to protect the cable? If you did, and given that 1.5mm² is the smallest capable allowed for a non-lighting circuit, if it were Method C (and Table 4D5, not 4D2A!), you might just as well have a 20A MCB. That's not my way of thinking, but it is a common view.
Agreed. Mind you, maybe that's a reason for the 20A MCB (and maybe 2.5mm² cable?) - so that it can be used for other things as well!
Kind Regards, John
OK, but to use a 6A OPD to protect a cable with a CCC ≥20A is then a bit OTT - and if it was the 6A OPD you'd prefer, as I said before, you are not allowed to use a cable with a CCC anything like that low!
There's the future to consider. Many an oven could be happily supplied by a 16A/1.5mm² 'cooker circuit', but we tend not to do that!
Kind Regards, John
I always put central heating boilers on their own circuit. It's a much better design.
Boilers, and their associated components are a common cause of RCD faults.
Also the heating is one thing you really want to keep working if there's a fault elsewhere in the property.
It's very little work to put in a separate supply. It will hopefully never be needed, but when it is, it'll be one of the best things you ever did.
Also the heating is one thing you really want to keep working if there's a fault elsewhere in the property.
It's very little work to put in a separate supply. It will hopefully never be needed, but when it is, it'll be one of the best things you ever did.
I thought of that one, but addressing that obviously needs a bit more than just 'having a separate circuit'
I suppose so. Do you take the same approach to fridges, freezers, tropical fish tanks etc. ?
I suppose it's quite unusual, but in my house "one thing I really want to keep working if there's a fault elsewhere in the property" is the macerator in the most-often-used (ground floor) loo
... but, no, it's not on a dedicated circuit!Kind Regards, John
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