Labelling conventions

I was reading Tomgunns post about separating 3 phase areas and it made me think of my latest project to fill some of the quiet times at the facility where I work


I have been labelling our my final distribution, and to make room, I have been removing all the old labels and putting new ones on, to a standard convention.


the amount of 3phase sockets that have Danger 400V on them is surprising. I have been labelling them with the slightly more useful 3ph&e or 3ph&N&E


also finding things with 400V between ---> on them


things labelled "Supplied from L7" on 3 phase boards in a factory with over 100 boards, oh, and we have, so far 14 DB/A and at least 8 "Main DB"


Identifying and labelling the main distribution is easy, but the final is a lot more time consuming than I was expecting. 


I'm talking about new labels by the way, in the last sort of ten years. There is one light switch that is fed from six separate fuses, 3 phases that has the original traffolyte label that looks to be dating from the 70s, I left that in place


not much point to the post, but do you have any conventions for labelling, information that is useful that you think people miss?


Ill reveal my convention after my coffee!