My converter was originally wired into one of the other breakers, I think the GFI outlets. There was room in my panel to add another breaker, so that's what I did and I used it for the converter alone. So this breaker is my converter on/off switch. See the pic below for the original
configuration. The breaker with two wires coming from it, one of which has an orange wire nut, was feeding 120V a.c. to the converter. I split the wiring at that wire nut and tied the orphaned wire to the new breaker.