Interesting photo, C-H.
I'm trying to work out the color coding used in Denmark. As per the common Euro-standard, I'm assuming that the light blue is neutral, and you can just see the green/yellow earth wires at the back (top left).
From the main cables entering the GFI (bottom right) I would say the phases are black, red, gray, although from one of the switch/fuse blocks it could be black, red, white.
It gets a bit confusing after that, as one block seems to have white for all three phases, and one even seems to be using green as a phase! I notice the cables linking the GFI to each fuse block seem to be black for everything, too!
