5 LBs, 150' run with #3 copper
hmy:
hmy:
Sounds like a time and labor intensive pull.
VS the time and labor spent drilling through the footing for what OP originally proposed to do?
I still am not seeing why we need 5 LB's. Are we running the feed to unit 3 in and back out of unit 2" If so, why?
If these all have a common roof - most areas will consider it one structure.
My install - I'd consider changing out service equipment - I know it is relatively new, but look at bigger picture.
Possibly install two mains, one 100 amp to supply the loadcenter in the unit where the service is, and a 150 or 200 amp main (totally dependent on load calculations which one is selected) and run 150 or 200 amp feeder to middle unit - tap that feeder to supply the middle unit, then tap to the third unit - outdoor taps can be unlimited in length.
Other details may change this approach, but is what I would be thinking of first.