Advise Needed

[Brainless]

I am putting in a 9.5kw shower to replace my old 8.5kw, i am correct that the old 6mm cable will need

replacing with 10mm cable on a 45 amp mcb in fuse box (old type) and a 45amp rcd between the run

from shower to mcb ?, the cable run is in conduit up to ceiling, under floorboards then bare up to loft

into conduit again down to shower so there will be volt drop ?, total cable un is approx 18 metres.

Am i allowed to do this, providing i get a qualified part p registered professional to test afterwards .

I am putting in a 9.5kw shower to replace my old 8.5kw, i am correct that the old 6mm cable will need

replacing with 10mm cable on a 45 amp mcb in fuse box (old type) and a 45amp rcd between the run

from shower to mcb ?, the cable run is in conduit up to ceiling, under floorboards then bare up to loft

into conduit again down to shower so there will be volt drop ?, total cable un is approx 18 metres.

Am i allowed to do this, providing i get a qualified part p registered professional to test afterwards .

sorry i meant AM I CORRECT

 

[Andy™]

may be possible with 6mm, but at that length your probably on the limits of it, so 10mm would be recommended

if you DIY it, then only building inspector can sign off your work, a part p registered sparky is only able to certify his own work, not that of someone else

 

[SPECIAL LOCATION]

I am putting in a 9.5kw shower to replace my old 8.5kw, i am correct that the old 6mm cable will need

replacing with 10mm cable on a 45 amp mcb in fuse box (old type) and a 45amp rcd between the run

from shower to mcb ?, the cable run is in conduit up to ceiling, under floorboards then bare up to loft

into conduit again down to shower so there will be volt drop ?, total cable un is approx 18 metres.

Am i allowed to do this, providing i get a qualified part p registered professional to test afterwards .

sorry i meant AM I CORRECT

At the end of the day you can do whatever you want to do...

But I assume you are considering this a "cost saving " excersie....?

A/  If you are sure your work is safe just do it and don't bother with testing....  (save more money!!)

B/ If you are concerned that it needs testing that implies some doubt on your own work..

what will you do if it FAILS the tests then has to be corrected??

Double the cost for doing work twice?? bang goes your cost saving!!

So logically....

If you are considering it prudent to have the work "signed off".....

It would be just as prudent to have a qualified electrician to actually do the work and be sure it is all safe and compliant with all regs and all joints are secure etc.. etc..

Remember terminating and dressing a 10.0mm cable neatly is a bit different form swapping a light fitting or adding a new socket......

Some electrical tasks are easy DIY tasks..

personally I would not advise a DIY to install a shower circuit!

That is notwithstanding the fact that you are not very clear about exactly what is needed ..

45A RCD ??????????

and why pick 45A MCB??

Just read the manufactures instructions that come with the shower and follow them...

If you don't fully understand them then by definition you are not competent to do the install!

:coat

 

[Sharpend]

+1, agree with specs here, actually considering putting Him forward to the government as an electrical Zsar!!

 

[Brainless]

soz didn't mean 45amp rcd..drive long hours should've put 30ma, if the existing 6mm would be ok

then its just a case of take shower off put shower on ?...its just that everything i've read points

to using 10mm, getting a quote of 400 quid was a shocker, so if i can do it and get it checked for

less then i'll do that...if its wrong so be it, but it might be right ?...just trying my best as i do enjoy

the thought of shocking myself..not.