electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
The general rule of thumb is that there is little penalty for bucking and a more significant penalty for boosting..... and a 240Vac system needs ±340Vdc. Just ballpark figures but it gives an idea.
So here in the northeast where it's cold, some quick and dirty calcs show it's actually tough to keep array voltage above the peak voltage for a 240v system with 600 volt strings.