12-11-2014, 02:42 AM
the 10 amp capacity is insufficient
10A is enough headroom for the small pumps, which draw around 7A.
I've actually thought about cascading a (small) 12V battery off a 48V system, using a conventional charge controller that's capable of floating on the 12V side -- it might seem excessive but there are probably cases where it's quite cost-effective, especially if the controller/battery live in the pumphouse, keeping the long wiring run on the high DC side.
10A is enough headroom for the small pumps, which draw around 7A.
I've actually thought about cascading a (small) 12V battery off a 48V system, using a conventional charge controller that's capable of floating on the 12V side -- it might seem excessive but there are probably cases where it's quite cost-effective, especially if the controller/battery live in the pumphouse, keeping the long wiring run on the high DC side.