Watts needed
I have read where folks suggest any where from 1 to 2 watts of solar per ah of battery. My question, is this based on battery rating (ie 215 AH) or is it based on useable amp hours(105)? All reply...
Forum Discussion
cliffy49,
Never apologize for asking questions!
Here are some reasons to go with a larger capacity controller.
It is quite likely you may wish to expand the system in the future by adding panels. If the controller is maxed out--then there is a extra (large) expense for doing so.
In addition, electrical equipment that is "pushed" to the edge of its capacity may be stressed a LOT more and fail prematurely. There is a cloud lensing effect that may cause the panels to output 25% more than usual. That may damage a controller that is teetering on the edge of being too small.
In at least one type of controller there are three modules that work together. First one cuts in, then as solar production increases another cuts it, and so on.
I've already given my reasons to wire in parallel.
I hope you will be happy with the system! It is the best money I spent on my RV.
Never apologize for asking questions!
Here are some reasons to go with a larger capacity controller.
It is quite likely you may wish to expand the system in the future by adding panels. If the controller is maxed out--then there is a extra (large) expense for doing so.
In addition, electrical equipment that is "pushed" to the edge of its capacity may be stressed a LOT more and fail prematurely. There is a cloud lensing effect that may cause the panels to output 25% more than usual. That may damage a controller that is teetering on the edge of being too small.
In at least one type of controller there are three modules that work together. First one cuts in, then as solar production increases another cuts it, and so on.
I've already given my reasons to wire in parallel.
I hope you will be happy with the system! It is the best money I spent on my RV.
