I have cut out a section in the drywall in a couple of places to access the transformer/junctions, etc. Can't seem to come up with a good solution for the hatch though.
Initially, I thought of just placing a small batten across and attaching the leftover piece of drywall to it, but I don't think it would work well if you decided to unscrew it. I've also considered just putting some kind of trim around and letting the drywall piece rest against it. It would be convenient if I could use the cut-out piece somehow.
Just installed an inspection hatch. Framed out a wall and had a junction point with 3 electrical boxes. Used 200x300 from Beijerbygg. 270:- with clamp brackets for plasterboard from 12.5 mm. Worked well.
I made a small hole with a hole saw and pressed a junction box lid into place. A hole for a junction box is still large enough to poke transformers in and stick a hand in to fish them out again.
But that is quite unnecessary information for you now.
If you have added studs where there are junction points, it becomes difficult to use a hand. Unless you have incredibly small hands and eyes on your fingertips. It's a bit tedious to reroute 100 meters of cables.
