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Joining 10Mm Cable....

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arwyn | 09:41 Fri 19th Jul 2013 | Home & Garden
7 Answers
The man who put our shower in (provisional) cut the cable too short, hence one of the wires in the pull ceiling switch keeps moving and the shower cuts out. We can only get to the wiring in the loft as all other wiring has been tiled or floored over.

Will all the ends of the wiring be in the loft? Do they all go into the pull switch?

Can it be extended?

Is it the same as extending cables on bedside lamps or do I buy some sort of junction box?

Getting him back isn't an option as he wrecked my house. His work is legal but a mess. My plumber laughed when he saw his work.

TIA... I'll reply to any answers later....
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The supply goes to the pullswitch, and then on to the shower.
Either can be extended safely. It's quite legal for you to do this. Since it's a 10mm cable, I guess the shower is a 40 or a 45A. Make absolutely certain you get a junction box that is rated accordingly.

Go to an electrical supplier and ask for a suitable junction box.

Take your time over the job. 10mm cable is hard to work with in a connection enclosure.
Question Author
Builder thank you, one more daft question----

Does the cable go in a triangle? ie fuse box at one end and pull switch at the other and shower at the other?

I'm not all daft like :) because I know showers were 6mm cable lol
Im sure if you go into the loft you will manage to find a few inches of cable to avoid the junction box method.When complete get someone to carry out (at the very least) a loop test to confirm all is well.
Thinking about it, I'm sure His Brightness is right. I'll bet you can gain a few inches of cable maybe by unclipping and re-arranging it.

It's a radial circuit, arwyn. Starting at the consumer unit........ then goes to the pullswitch .......... then, finally, the shower. Unlike a ring circuit, it doesn't return.
Question Author
Thank you to both of you. We won't get a chance to even have a look until Monday (work etc)..

But I'll be back either way. :)
I'm wondering how the hell this 10mm cable is "moving" to cause the shower to cut out... in my experience a 10mm cable, if properly connected, is not going to "move"... if it reaches to start with it's going to stay connected! (you could hang from a properly connected 10mm cable and it would stay connected!!)

If you've got a 40A shower cutting out due to a cable "moving" you have a very serious fire hazard in your house!
Electrical contractors association might be interested in this and be able to advise you. You've paid for a job that hasn't been done right, eh?.

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