WH, listen, each "appliance" has a load rating in AMPS.
stay away from 14ga (sorry shov) unless its 6 ft in ur room.
12 ga (12 AWG) is the rating u should use for main run to any selected power source,
check ur breaker box, look if its 15 or 20 amp breakers.
then add up all useage on that line.

2 man test.
1 person flicks breakers, whilst other identifies outlets affected by this breaker.
then add up amps on that circuit.
for a 20 amp breaker, try to go no higher than 15 amps.

i can explain deeper if needed.

or

what is not clear?

i will go back and read for solar idea.:thumbsup: