On Dec 22, 4:23 pm, wrote:
What exactly are you planning on doing?

installing a subpanel on the 2nd floor and running several circuits
from it. i have a clear path from the panel to the circuit locations
(attic access behind the wall) and a path figured out for the feeder
cable. i'll feed the panel from the main with a 60A over 6/3 and run
about 7 20A 120v circuits using 12/2. i can pull an unused 40A double-
pole breaker from the main to accommodate the new feeder breaker. i
know to keep the neutral and ground isolated in the sub. however,
this is the first time i've done something this extensive wiring-wise.