I am quoting for a new consumer unit to go in to a domestic garage. Supplies 3 circuits in the garage and a couple of circuits to other outbuildings.
Especially with the recent guidance on metallic consumer units outside I have been leaning towards using a plastic consumer unit, then comes the challenge.
I don't think anyone still builds populated consumer units for more than 4 ways. So then I look at building my own and power dissipation, very little information available from what I can see, the only company providing data is MCG at 1a very low 11W.
The best I can find is that some enclosures state then are ok for say 63A, no idea what the assumed heat dissipation is. Also heat a dead end when looking for heat dissipation from RCBO's, I remember in the past seeing 12 to 15w at full load. So I seam to be left with a choice of putting a metal board in and hope it doesn't suffer from condensation, or puta plastic one in and hope it doesn't over heat. I could also put a metal board in a plastic enclosure, a bit less risk with heat.
I could probably just use any plastic din rail enclosure and not have an issues, but frustrating this is so difficult.
Thoughts?
