Did I do it right?

[DCfleetwood]

So I just installed a new solar array on my motorhome to basically be able to keep batteries charged while we park for a month and keep propane/electric refrigerator on to keep food fresh until we return and continue our full timing on the road. I installed two 200W 24V panels from Rich's solar, a Victron 50/150 MPPT controller and what I thought were ample CB in line. Someone on another forum stated that the CB was too small for the system and recommended I post here, so please take a look and tell me if those CB are the ones I should use or should I replace with something else and what do you recommend? Thanks in advance for all replies!

 

[Doggydogworld]

Those breakers are probably sufficient for parking in the shade

The MPPT pictured is a 100 / 50. Are the panels in parallel? In series they can exceed the 100V MPPT input limit in sub-freezing temps. (Assuming you have the 24V 200W Rich Solar panels I found rated at 45.4Voc and 5.83A Isc).

In parallel two panels can only put out ~12A total, so I don't see a problem with a 25A breaker between the panels and the MPPT.

Your MPPT can in theory send 50A to the battery. In reality it can't send more power than your ~400W panels supply. If you have a 24V battery the nominal charging current would be 400W / 24V = 16.7A. And your horizontal panels probably won't even supply the full 400W. So I doubt your 25A breaker will trip if connected to a 24V battery.

But if you have a 12V battery your nominal charging current is twice as high: 400W / 12V = 33A. That exceeds your breaker capacity.

 

[DCfleetwood]

Those breakers are probably sufficient for parking in the shade

The MPPT pictured is a 100 / 50. Are the panels in parallel? In series they can exceed the 100V MPPT input limit in sub-freezing temps. (Assuming you have the 24V 200W Rich Solar panels I found rated at 45.4Voc and 5.83A Isc).

In parallel two panels can only put out ~12A total, so I don't see a problem with a 25A breaker between the panels and the MPPT.

Your MPPT can in theory send 50A to the battery. In reality it can't send more power than your ~400W panels supply. If you have a 24V battery the nominal charging current would be 400W / 24V = 16.7A. And your horizontal panels probably won't even supply the full 400W. So I doubt your 25A breaker will trip if connected to a 24V battery.

But if you have a 12V battery your nominal charging current is twice as high: 400W / 12V = 33A. That exceeds your breaker capacity.

I installed my panels in parallel for better efficiency. I am connected to a 12V system so I will increase my CB to be safe and yes they are the 24V panels. Thanks!