I have a PV inverter that is rated at max output of 25A, and the backfeeding breaker in the main panel is a 35A. This is appropriate considering the 25A * 1.25 and round up sizing formula. However, I'd really like to move an additional size up to a 40A breaker so that I can replace the existing one with a quadruplex breaker to free up a space in the panel.
The main panel is rated 200A so I should be allowed up to a 40A PV breaker. The conductors to the inverter are #8 THHN in conduit.
Is there anything that should prevent me from swapping this 35A breaker out for a 40A quadruplex?