460 watt solar setup: wire sizes?
I want to change out my old 50 watt panel and 10 amp controller with at least one and hopefully two 230 watt 24 volt panels and whatever controller would be best. Right now the roof on my fifth wheel ...
Forum Discussion
I hope we are still on the OP subject here. As I see it, at the moment there is no better choice for 460W than Tristar 45 (and the same for 490W).
I still think that 30A would suffice for a "fixed installation" as Don put it, i.e. non-tracking and with non-optimal tilt most of the time. To think about it, fixed all-year tilt North of 25 Latitude reduces the annualized output to 72% of the optimal. Fixed summer tilt - 75% of the optimal. Together with 96% post-controller power it means 460*0.75*0.96=331W. 30A clipping would never happen then. I would get the Rogue if it were available, but it is not.
I still think that 30A would suffice for a "fixed installation" as Don put it, i.e. non-tracking and with non-optimal tilt most of the time. To think about it, fixed all-year tilt North of 25 Latitude reduces the annualized output to 72% of the optimal. Fixed summer tilt - 75% of the optimal. Together with 96% post-controller power it means 460*0.75*0.96=331W. 30A clipping would never happen then. I would get the Rogue if it were available, but it is not.
