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| General Electrical Discussion All your electrical questions regarding electrics from within the United Kingdom. Anything that doesn't fit into any other forum that is electrical related can be posted in here. |
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05-08-2008
| #1 (permalink) |
| Junior Member Join Date: Aug 2008
Posts: 1
 |  Electric shower advice needed Recently my father fitted a new shower but after about 3 minutes of use the trip switch on the MCB trips (which is rather anoying). The only rating I can find on the MCB for the shower is B32, this could be wrong though. Any ides on why this is happening would be greatfully appreciated. Thanks The shower is rated to 8.5kw and a link to it is below Buy Caselona II 8.5kW Electric Shower. at Argos.co.uk - Your Online Shop for . |
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05-08-2008
| #3 (permalink) | |
| Guest
Posts: n/a
| Re: Electric shower advice needed MCB is the right size for 6mm cable (assuming he used 6mm?). Needs further investigation. I would pay a spark to come round and sort the problem if I were you  Quote:
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| Last edited by Cirrus; 05-08-2008 at 07:45 PM. Reason: Automerged Doublepost | |
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05-08-2008
| #6 (permalink) | |
| Respected Member Join Date: Feb 2008
Posts: 918
| Re: Electric shower advice needed Quote:
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05-08-2008
| #8 (permalink) | |
| Guest
Posts: n/a
| Re: Electric shower advice needed Quote:
A type B MCB trips off instantaneously at 3 to 5 times its rating (90-150 amps approx) it is designed to carry 32A indefintely, and above that its a matter of time against current ie, the more current you overload it with the quicket it will blow You will need a B40 in there and should be looking at at least 6mm cable, but maybe even 10mm even if there is thermal insulation etc My advice? Get a sparks in, you have already overloaded the circuit | |
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