V(oc) on solar panels
Well I found a 2016 used TT, Arctic Fox 25Y. It has 2-100 Watt Zamp panels that were installed by the dealer, with a Zamp controller. I was told that it has 8 AWG wiring with three connections. I h...
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All the panels will be at battery voltage (so the same voltage) when connected using a PWM controller. They will add their amps ok at least up to 15v. You get amps at Isc value in full sun, fewer amps when panels are flat on the roof with sun not right above.
MPPT is different, where it tries to use a single Vmp. With PWM, Vmp is meaningless.
There might be some losses mixing mono and poly but not much AFAIK.
With the two 100s at 6.2 each Isc and the 160 at say 10 amps you will want a 30 amp controller (needs some amp margin for when panels go above ratings at times) and the panels in parallel (not series with PWMs which can't take the high added Vocs)
#8 wire should be fine within reasonable lengths. Suggest a Grape 40 amper as the new controller. (good price and room for more panels at the 40 than with a 30)
MPPT is different, where it tries to use a single Vmp. With PWM, Vmp is meaningless.
There might be some losses mixing mono and poly but not much AFAIK.
With the two 100s at 6.2 each Isc and the 160 at say 10 amps you will want a 30 amp controller (needs some amp margin for when panels go above ratings at times) and the panels in parallel (not series with PWMs which can't take the high added Vocs)
#8 wire should be fine within reasonable lengths. Suggest a Grape 40 amper as the new controller. (good price and room for more panels at the 40 than with a 30)
