Why would an electrician install a 10 mm twin and earth circuit protected by a B32 MCB for a 8.5 kW shower?
Why would an electrician install a 10 mm twin and earth circuit protected by a B32 MCB for a 8.5 kW shower?
gkenyon:
Legh Richardson:
Colin Haggett:
I know one thing, if there’s a couple of teenage girls in the house it will definitely trip.
Yes, I was called out to investigate a shower that had blown a 30A wylex fuse. The lady in question said that her niece had been enjoying the new water power spray for about ¾ of an hour when it stopped. It appeared the woman had had installed a new electric shower the day before.
Legh
BUT … is that a failure of DESIGN (in relation to the characteristics of the fixed appliance and the OCPD) or OVERLOAD PROTECTION?
I really think it's NOT 433 …
… BUT as I've said all along in this discussion thread, I don't think that's a reason to say it's OK and complies with BS 7671!
Both!
8.4kW electric shower replacement for an 8.0kW shower supplied from a 6.0mm2 cable on a 30A fuse.
Poorly designed in the first place, then upgraded to a less safe design and therefore over loading the circuit.
She seemed to think the council would pay for the work. Not to cast aspersions but you really need to be careful when dealing with certain types of tenant.
There was some talk about DIY gaswork.
Needless to say, I did not progess with this job any further.
Legh
gkenyon:
Legh Richardson:
Colin Haggett:
I know one thing, if there’s a couple of teenage girls in the house it will definitely trip.
Yes, I was called out to investigate a shower that had blown a 30A wylex fuse. The lady in question said that her niece had been enjoying the new water power spray for about ¾ of an hour when it stopped. It appeared the woman had had installed a new electric shower the day before.
Legh
BUT … is that a failure of DESIGN (in relation to the characteristics of the fixed appliance and the OCPD) or OVERLOAD PROTECTION?
I really think it's NOT 433 …
… BUT as I've said all along in this discussion thread, I don't think that's a reason to say it's OK and complies with BS 7671!
Both!
8.4kW electric shower replacement for an 8.0kW shower supplied from a 6.0mm2 cable on a 30A fuse.
Poorly designed in the first place, then upgraded to a less safe design and therefore over loading the circuit.
She seemed to think the council would pay for the work. Not to cast aspersions but you really need to be careful when dealing with certain types of tenant.
There was some talk about DIY gaswork.
Needless to say, I did not progess with this job any further.
Legh
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