info re old shower isolator

[stevewah]

hi ive got an unused isolator in my airing cupboard that use to run a shower. no longer have has have combi boiler feeding a new shower. the isolator sw is feed with 6mm and fuse on board is a hager mtn132 /b32. the board has rcd . i would like to add two sockets to my loft . can i add a 4mm radial feed from the 6mm isolator in in to the loft for the 2 sockets i plan to set up a gaming room up there and a heater for colder months from my son . thanks for any help should add i am in the uk

 

[littlespark]

Yes.
32A for a 4mm is good… doesn’t matter than some of the circuit is 6mm

It’s highly likely that it is, but make sure the rcd protects the circuit.

 

[stevewah]

Yes.
32A for a 4mm is good… doesn’t matter than some of the circuit is 6mm

It’s highly likely that it is, but make sure the rcd protects the circuit.

cool thanks for getting back thought it would be fine there is two rcds on board am sure its cool but will look in to it

 

[nicebutdim]

Yes.
32A for a 4mm is good… doesn’t matter than some of the circuit is 6mm

It may not be suitable.

 

[stevewah]

It may not be suitable.

how come ?

 

[westward10]

lnstallation methods will dictate whether 4.0 is okay on a 32A protective device.

 

[littlespark]

Ok, depending on cable route, whether it’s through insulation or not…. But can down rate the mcb to 25 if need be.

 

[westward10]

Or trunking/conduit assuming this is PVC/PVC cable.

 

[stevewah]

Ok, depending on cable route, whether it’s through insulation or not…. But can down rate the mcb to 25 if need be.

the 6mm comes from board understairs then bout 4 foot under landing floorboards the up the side of the airing cupboard wall to the isolator from the isolator to loft is 650mm stright to ceiling no insulation where cable will go in loft then it will run 2 meters in trunking two the two sockets

 

[westward10]

If it is contained in trunking then 4.0 T&E is not suitable for 32A.

 

[stevewah]

If it is contained in trunking then 4.0 T&E is not suitable for 32A.

ok so no trunking can clip to loft floor / beams

 

[westward10]

ok so no trunking can clip to loft floor / beams

Provided it is not prone to mechanical damage then yes.

 

[stevewah]

Provided it is not prone to mechanical damage then yes.

thank you

 

[nicebutdim]

With the mention of a loft I'd expected the cable would at least pass through some insulation.

 

[stevewah]

With the mention of a loft I'd expected the cable would at least pass through some insulation.

ive removed the bit where the cable will pass

 

[jedisparks]

Is the existing RCD type A?

 

[Penguin]

hi ive got an unused isolator in my airing cupboard that use to run a shower. no longer have has have combi boiler feeding a new shower. the isolator sw is feed with 6mm and fuse on board is a hager mtn132 /b32. the board has rcd . i would like to add two sockets to my loft . can i add a 4mm radial feed from the 6mm isolator in in to the loft for the 2 sockets i plan to set up a gaming room up there and a heater for colder months from my son . thanks for any help should add i am in the uk

If this 6mm T&E cable is independent and straight from the DB.

Have a sparky check it’s insulation resistance test…!! ( in case it’s an old cable that’s had a tough life).

If it’s all GOOD.!

Treat it like an extension.!

DB1 with a 40amp feeding your 6mm to a DB1/1 mini board in your loft to feed 2x radial sockets and as you mentioned.!!! Lights & possibly a Heater….!!!!

As you mentioned your kids might be up there.
PLEASE PLEASE install an interlinked Smoke/Heat detector..