Question:
if I wanted to install a 60a subpanel, what amperage breaker
do I need at the main panel? I don't need the entire 60 do I?
Answer:
If you have a 50a, 2-pole breaker for the hot tub, and another 15- or 20-amp
breaker for the outlet, I would suggest sizing the wiring for 60 amps and
using a 60-amp breaker to feed the sub-panel. Although the hot tub requires
a 50-amp circuit, it won't actually draw the whole 50 amps, so that you
could probably get away with a 50-amp feeder, but you won't save much
money.
