Switch to my powers shower is broke. It was hot and smelt before giving up. I've had a look and don't know if I can cut back the burnt cable and replace the switch or if I need a electrician to rewire the whole thing.
A power shower is normally rated at around 150 watt, and would have a 3 amp fuse, it is very unusual for a power shower to show over load problems, so question one is are you sure it is a power shower.
No pictures show so can't really comment.
A power shower has hot and cold feeds from the cistern and it puts some pressure into the output as often the hot water has no or little pressure without it, The shower will normally work without the electric supply, but no force in the water.
An electric shower normally has only a cold water feed and heats the water and takes the water from the mains supply so it is not permitted to have a pump like the power shower has.
So to burn wires in a power shower supply is very unusual so I would be looking for some other fault to cause it, burning wires in an electric shower is common where wire not tight enough.
No Pictures, so based on what has been said. Call an electrician to take a look at it, for a professional opinion.
As eric has mentioned power showers and electric showers are different, as is the current required to supply the demand.
It would normally be a loose connection that would cause heat damage to cable/switch, but if the cable has not been specified correctly for the design current or the switch has not been correctly selected for current rating, then that could also cause this type of issue.
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