The situation is a garage being converted into a TV room
External wall with batten attached which is to be insulated with 75mm PIR insulation and plaster boarded
Stud is only 70mm!!
Picture attached...
The house CU is high up on the wall. the tails ran down the internal garage wall to the outside meter box
A second CU was mid way down the wall feeding an external EV charger, the tails of which also went to the external meter box
The tails were in plastic conduit surface mounded.
Since the tails (no RCD protection)to both boards are to be hidden by the plasterboard, I though best to put in two lengths of earthed metal conduit (50x50)
The 10mm feed to the 7kW charger is clipped to the batten.
The owner is doing the batten and insulation.
I am concerned about insulation being near my cables and trunking
I presume the trunking it self will be a break in the insulation so could be a thermal bridge?
Could you run the insulation up to the trunking or should they be a gap.
cables clipped along the batten how far should they be from the insulation,
I would like to leave about a 50mm gap? but this will cause this thermal bridge issue I believe?
Also say if a 2.5mm socket radial (fused to 16A) was ran through the batten and against the concrete block
with insulation over it. What installation method would you consider that. I presume these soft concrete blocks have some insulation factor.
Will they be much of a heat sink?
I am concerned about the EV cable really as a continuous load in this stud work. Its has a bit of extra capacity as 10mm2 for a 7kW charger.
How can the wall be adequately insulated, without bridging and the cables be safe?
Thanks
