The way I setup Distribution lines is:
Main Service Equipment = MSB-# (Main Switch Board),
Distribution Equipment = MDP-# (if large distribution equipment for both high and low voltage sides, then the number is appended with "H" or "L"),
Transformers - T-# (if isolation transformers are included, then "TP-#" for normal power systems, and "TI-#" for isolated systems),
High Voltage Subpanels (i.e. 480Y/277) = "HP-#",
Low Voltage Subpanels (i.e. 208Y/120) = "LP-#"
*** BTW:
if a Subpanel is fed from another Subpanel, then it receives an alphanumeric designator - such as:
"HP-1A" is fed from panel "HP-1"
Good luck with this task.
Scott35
p.s.:
Let me know if the spreadsheets found at the link Bjarney has listed are of use.
