I just have accessories, pumps, lights, sonars on the 25A breaker. Engine, power poles, and jackplate go to the battery terminals. Everything on the battery terminals goes through a master battery switch so I can turn it all off. So I can shut off the engine, poles, jackplate, but turn on the 25A breaker to run the sonars if I want to sit in my boat and mess with maps on my sonar unit. Or shut it all off and have zero drain on the battery.I think the way it came from the factory, only the accessories are on the breaker – master power, A10 panel, sonars, NMEA, pumps, etc. Dont run the poles and engine through it.