Shop has a 4 wire panel with no main breaker(sub panel?) The main breaker and disconnect are on the pole outside. Can I use a panel with a main breaker?
If you are talking about replacing your main lug panel with a main breaker style, the answer is yes. You would still need to keep your grounds isolated from the neutrals.
Looks like we lost a few threads. I called Xcel Energy and was told the service is good for 200 amps. I'll trench from the pole to the shop and properly bury the lines.