I've been reading up on Marine Electric in a US Power Squadron course. They state that you should have a service switch (breaker) with overload protection within 3' of the service male plug (not at the panel, but upstream). My 1987 322 has no such breaker between the service entrance and the panel. Do others have this additional breaker? Is this something that was recommended after 1987? (My 1987 O'Day 272LE didn't have this additional breaker either).