what size cable do i use for an electric shower?

Answer 1

Hi my husband has just told me that it is 10mm.
It used to be 6mm but if you go to a good shop anyway they will advise you .
Our shower runs with a 10mm cable.

Answer 2

Shower Cable Size

Answer 3

For a start if you use 10mm cable it has to be on at least a 40 amp breaker, I would use 10mm if I was installing but if you have a 6mm cable you have to check the shower manufacturer's instructions, it also depends on how the cable is installed - wether it is in conduit or in the wall or just clipped to the floor joists, also how far the cable 'run' is.
And it is best to have a qualified electrician do the work but it isn't the Law.

Answer 4

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6²mm cable should be ok for the circuit that you describe. If the cable is only overheating at the ends, where it's connected at the switch, then either--- 1) the terminals are not tight enough. 2) the switch is poor quality. 3) The switch is only rated at 30 amp, Fit a 45 amp type. Don't fit the replacement switch onto the damaged cable ends, only onto clean, newly bared strands. Make sure that you don't nick the strands when baring the conductors, use a 'BLUNT' knife. Any combination of the above will cause your problem. What is the showers loading??

Answer 5

6mm square should be plenty big enough. it sounds like there is another problem. I'm not familiar with Pull cord switches in showers? Did you install it yourself? Are you sure the switch is rated to carry 30 amps? Insulation melts of course because the wire is heating up, BUT that heat could be coming off the terminal. Check that every part of the installation is rated for at least 30 amps. I am not a household electrician but a 30amp pull switch for a shower sounds unusual to me. Check here first. It goes without saying that you are in danger of death if you make a mistake wiring near water. Perhaps you should get a qualified electrician to look at it.

Answer 6

It is only primary school educated people could make shades and doubts in this business . If you have secondary school education in physics and studied electricity chapters you will find that 10mm cable, 15 meter long clipped to the wall or under plaster board and it is intended to supply energy 7.5 kw at 240 v will exceed minimum heating requirements for domestic installation at list 4 times. But bu‧reau‧crats made electric installations rules do not have even primary school education that why they want to install in your home power station and protect their pompous ***. One phase 6mm copper wire will exceed heating requirement at list 2 times . Important to connect the ends properly, make contacts tight as any gaps in contacts will create micro arc within connection that could be source of heating.

Answer 7

showers which are rated between 7.5kw and 8.5kw require 6mm minimum.showers above this require 10mm. these figures are only a guide and are dependent on various other factors (length of cable run etc). even if your shower is at the lower end, I would install 10mm cable in case you want to upgrade. having said that, some of the other answerer's are correct, you now either have to be a qualified electrician or have a certificate of electrical competence( domestic) from a college. I am an electrician and the fact that you even have to ask this question has set alarm bells ringing.PLEASE DO NOT ATTEMPT THIS YOURSELF. CALL IN A SPARK.

Answer 8

To save any issues and to allow for future upgrades, allow a cable size of 10mm, and a pull cord/isolator switch capable of taking 50 amps, and a mains circuit breaker to suit the load, and get an electrician to do it if you have any doubts whatsoever. Email me for any further electrical related queries

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Answer 9

Go for the 10 mm installation in your raining room,treat yourself with a gentle to a massage from a power shower,i did and never will regret it.

Always ensure you have a 30/45 amp R`C`D switch installed between meter and raining room for safety reasons,i need not mention.

Answer 10

The instructions that come with the shower tell you. you need stronger cable for stronger showers basically.My shower cble is 7.5 if I want another shower I have to get same.

Answer 11

I would use 10.0mm cable. You can use 6.0mm for a small shower but you may later want to change it to a bigger one. Also depends on the length of cable required.