I made up this instruction list for generator operation and taped it near the panel box in basement. Have gotten feedback that main breaker should always be turned off
before generator started and plugged in. My reasoning for this is to allow the gen to warm up a little, a few minutes anyway, before a load is put on it. Since the mechanical interlock prevents energizing the panel with gen power until the street power master breaker is flipped off, I didn't see any safety concerns here. But maybe I'm wrong. There is a 100 amp breaker for panel and separate 50 amp breaker for gen, and only one can be turned on at same time. Thoughts? I gave these instructions to electrician and he said they were fine. Safety first, but I thought the interlock prevented unsafe operation.