Discuss Electrical wire for electric shower in the Electrical Forum area at ElectriciansForums.net

MalcolmS

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Hi All,
I hope you are doing well.
I am asking about the electrical wire. I am in the process of working on the floor across the 1st floor and while the decking is exposed I want to run a wire for future power shower. What wire should I use?
Thanks
Best regards
 

pc1966

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For all the cost difference now versus having to replace later, put in 10mm cable and have a decent amount of slack at each end.

Somewhere along its route you will need an isolation switch so the shower can be switched off for any maintenance or if faulty, etc. Traditionally that was an adequately rated roof-mounted pull switch (e.g. Crabtree 50A type) but you can have a more conventional switch elsewhere so long as it is suitable for the environment as well as adequately rated.

For now just get the cable in and let any future spark worry about that aspect, but if you are planning building/decorating work then sorting out an expected switch position, etc, early on can save a bit of hassle.
 
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MalcolmS

DIY
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For all the cost difference now versus having to replace later, put in 10mm cable and have a decent amount of slack at each end.

Somewhere along its route you will need an isolation switch so the shower can be switched off for any maintenance or if faulty, etc. Traditionally that was an adequately rated roof-mounted pull switch (e.g. Crabtree 50A type) but you can have a more conventional switch elsewhere so long as it is suitable for the environment as well as adequately rated.

For now just get the cable in and let any future spark worry about that aspect, but if you are planning building/decorating work then sorting out an expected switch position, etc, early on can save a bit of hassle.
Awesome. Thank you. I get the wire sorted in advance.
 

Intoelectrics

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Just be careful how you run the cable, make sure its routed sensibly with no strain and if run with other cables make sure there is plenty of room and no damaged is caused when pulling in. Avoiding routes where it could be damaged by nails/screws and is not draped over or too close to metal pipe work. It may also require additional support depending on the intended though in most underfloor circumstances there is usually little if any required. Also beware of guidelines regarding drilling through floor joists.

There is guidance available on installation methods and cable routes. My advice would be to look this up before you plan your route.
 

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