Ceiling Switch for Electric Shower

[chukka]

We had a new shower fitted over our bath 12 months ago. The ceiling pull cord switch is also in the shower area over the bath. We have had just had a switch failure, which on investigation shows melting on one of the cables. The cable is 10mm.

1. Should the switch be in this location, or elsewhere, say near the door?
2. If the location is OK, should simply replacing the switch be OK, as long as it is the right rating? I have read that melting is often simply due to poor connections.
3. If I want to move the switch, rather than rewire the shower unit itself, to give me sufficient cable length, can I join the cable at a junction box and if so, what rating should I use? Will a 30 amp box be OK or should I use a cooker connection type?

Any advice gratefully received - Thanks.

 

[breezer]

the switch shpuld not be in the shower, yes you should relocate and change switch, 30A anything is too small, why not see if there is any slack, if not rewire from switch to shower will be better

 

[chukka]

Thought our bathroom fitter was a bit a rogue (to say the least!)

There's not enough slack in the cable to move the switch the necessary distance 2m and rewiring the shower would be very disruptive (although obviously possible).

I realise rewiring would be the best option, but would joining the cable using a cooker rated junction block be acceptable?

 

[breezer]

you should use henly blocks for something of that size, by the time you get them, and connect them, you will find out rewiring is easier

 

[crystal ball]

you should use henly blocks for something of that size, by the time you get them, and connect them, you will find out rewiring is easier

You advise people to use "henly blocks" to join T&E, can you explain how?

 

[Adam_151]

you should use henly blocks for something of that size, by the time you get them, and connect them, you will find out rewiring is easier

You advise people to use "henly blocks" to join T&E, can you explain how?

Inside an adaptable box, shouldn't try and use it on cables below 10mm² though. TLC do a 60A junction box, which would probably be a better solution