Unused 10mm2 cable in loft, options for power in loft?

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dualweaponword
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Unused 10mm2 cable in loft, options for power in loft?

Post by dualweaponword » Sat Aug 11, 2018 3:49 pm

Hi,
We've recently had a rewire done and the original plan was to run a 9.5kW shower but it's now running off the combi-boiler instead so I have a 10mm2 cable that goes into the consumer below with a 40A MCB.

Now decided to put a couple of double sockets up in the loft so was wondering what's the best and safest to go about it?

Thought about these options...
1. Attach 10mm2 directly into a 13amp double socket - imagine that's quite difficult and would restrict running other double sockets off it?
2. Replace cable with 6mm2 and MCB with 32A, same as the house sockets.
3. Buy an new mini circuit board often seen in garages and attach 10mm2 cable to that then run several sockets off it.

Anyone give any advice on what they would do?

Cheers,
Paul
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someone-else
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Re: Unused 10mm2 cable in loft, options for power in loft?

Post by someone-else » Sat Aug 11, 2018 4:12 pm

It's your choice,

1) That I would like to see.

2) I don't see the point of changing the cable to a smaller one, and then what would you do with the 10mm?

3) Guess
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Re: Unused 10mm2 cable in loft, options for power in loft?

Post by dualweaponword » Sat Aug 11, 2018 7:05 pm

Can you suggest a mini circuit board that would do the job mate? E.g a screwfix or toolstation link? Cheers
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Re: Unused 10mm2 cable in loft, options for power in loft?

Post by someone-else » Sat Aug 11, 2018 7:42 pm

Either place sell them, it's your choice. (I might like "this one" and you may think its cr*p, so that's why its your choice)
Fret not, a forum is a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link to find out more.

Working on anything electrical? have you got a multi meter? why not? Would you hit a nail with a shoe?

If gloom had a voice, it would be me. :mrgreen:

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dualweaponword
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Re: Unused 10mm2 cable in loft, options for power in loft?

Post by dualweaponword » Sat Aug 11, 2018 8:11 pm

I'll have a look. Is it a problem that there will effectively be two RCDs protecting this circuit? Is a device attached in the loft causes a fault which consumer unit will trip?
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Re: Unused 10mm2 cable in loft, options for power in loft?

Post by OnlyMe » Sun Aug 12, 2018 6:42 am

dualweaponword wrote:Hi,
We've recently had a rewire done and the original plan was to run a 9.5kW shower but it's now running off the combi-boiler instead so I have a 10mm2 cable that goes into the consumer below with a 40A MCB.

Now decided to put a couple of double sockets up in the loft so was wondering what's the best and safest to go about it?

Thought about these options...
1. Attach 10mm2 directly into a 13amp double socket - imagine that's quite difficult and would restrict running other double sockets off it?
2. Replace cable with 6mm2 and MCB with 32A, same as the house sockets.
3. Buy an new mini circuit board often seen in garages and attach 10mm2 cable to that then run several sockets off it.

Anyone give any advice on what they would do?

Cheers,
Paul
Terminate the 10mm cable into a 60A Junction box and run 2.5mm cable from there to the sockets. Then swap the MCB for a 32A one if the sockets are a ring or a 20A one if it is a radial.

Small edit. I notice neither Screwfix or Toolstation seem to sell 60A junction boxes. So an alternative to that, if these are the only two shops you going to use is to use a cooker connection point instead of a junction box.

eg https://www.screwfix.com/p/british-gene ... /45080#_=p
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