I did it on a 2x4 wall and they had to build out a tiny section on the outside to get the R value. I felt pretty bad. I had been doing it inside walls so long the building code changed on me.2x6 walls we put 2" foam(high density) works great.. 2x4 walls try to avoid recess panel ,
Recessed panels on exterior walls must have a vapour barrier. At least in BC. I don’t believe it is an electrical code rule but it is a building code rule. This also applies to media panels. It’s not that hard, there is usually poly on site that someone won’t mind sharing. I like to leave excess length at the top so that I can drape it over the front of the panel during construction phase so the cover doesn’t get all scratched up and dust doesn’t get all over the equiment.Just curious how many of you install vapour barrier around your panels when they’re inserted into the wall? I feel it’s a good idea, but most pictures I’ve seen doesn’t have any.