bigbillsd wrote:
time2roll wrote:
You do not need a main as shown in the picture.
If there is no main, what would protect the inverter from both circuits pulling 20amps and overheating the 30amp circuit to the inverter? I understand that scenario probably shouldn't happen, But..
The 30A breaker in the main RV panel that feeds the inverter does precisely this. That breaker is needed; a main breaker for the subpanel is superfluous. (If it's running on inverter power, and not pass through, then presumably the inverter's protection circuits would limit current by shutting down.) If one's still worried, use 8 gauge wire rather than 10 gauge wire between the inverter and the subpanel and it won't be overloaded even if 40A is flowing.
