My guess is that it is an old panel with old colour code. Or rather - lack thereof. Can anybody see any grounding?
The connectors are "u-boats", so nicknamed because of their shape. The standard size holds three 2.5 mm2 wires.
David: If you think this is tight, you should see the 2x2 inch junction boxes used for four or even five incoming cables. Or the 1 1/2 inch boxes...
[This message has been edited by C-H (edited 10-19-2002).]