PV upgrade decision
Right to the point: should I upgrade to a bigger panel or to an mppt controller? More info for those that take the time to read: I have a 100 watt, 21 ish volt panel and a pwm controller right ...
Forum Discussion
Either one of these 250W panels - Tyn or Ameri - have voltage below 40, so your controller will handle ONE of them. It "could" work with 2*250W, but the total current will be dangerously close to the limit. With one panel you will still see a notable increase in amps, compared to 100W.
For MPPT you need to decide whether to wire 2*250 in series or parallel series. Will work either way but the cable should be different.
If you shop around, you will find 280W panels of the same size and weight as 250W. Won't make a difference in controllers choice, you'll probably have to buy TS MPPT 45 anyway.
For MPPT you need to decide whether to wire 2*250 in series or parallel series. Will work either way but the cable should be different.
If you shop around, you will find 280W panels of the same size and weight as 250W. Won't make a difference in controllers choice, you'll probably have to buy TS MPPT 45 anyway.
