I just realized I should clarify my terms @jssailem. Every time I have said “main breaker”, I was referencing the DC breaker at the Battery DC Parallel Panel (picture uploaded). I was not referencing the DC Main breaker at the Main DC Panel. In my mind the breaker at the battery bank, being that it is upstream of the main DC panel, is the true “main breaker”. I just realized that I may have been using inappropriate terms in this regard and caused confusion.
To reiterate the situation with that clarification, the breaker at the DC Parallel Panel trips every time I use the windlass (the DC Main breaker at the Main DC Panel does not trip, never has in my experience). The power to the Main DC Panel simply cuts out as the upstream breaker at the DC Parallel Panel has tripped. This happens every time I activate the windlass, up or down, with the batteries fully charged and engine running at 1500rpm.
To reiterate the situation with that clarification, the breaker at the DC Parallel Panel trips every time I use the windlass (the DC Main breaker at the Main DC Panel does not trip, never has in my experience). The power to the Main DC Panel simply cuts out as the upstream breaker at the DC Parallel Panel has tripped. This happens every time I activate the windlass, up or down, with the batteries fully charged and engine running at 1500rpm.