Here the colors seem to be standard European predating the last round of harmonization. Two black and one brown for phases.
Regarding the first picture again... no, no way those wires are able to carry 800amps. The way the strands look just doesn't seem right, besides I guess any electrician with some sense in his head would run several parallel conductors instead of a single big one for 800 amps. Is it actually 80A? That might just be possible with the visible wires.
The line side of those breakers those look hefty... that _could_ be a few hundred amps bus bar!
Could you give us any further info, like breaker ratings, close-up pictures of the breakers?
