In general:
An issue that I have now noticed and no one's questioned: Aren't the parallel conductors all supposed to be the same length? (Not only each phase/neutral, but the overall set.) From the looks of this install, I'd say no. Another red sticker?
Only conductors actually electrically in parallel need to be of the same length, diameter, insulation and conductor material. Separate phases (or the neutral) could be of different characteristics. The neutral could be smaller, shorter, etc. Phase A could be copper and Phase B aluminium, etc. But all conductors of Phase A need to be the same, etc.
-Jon
