Parasitic Draw on RV?
I am getting ready to add a small solar system to the top of my 5er to keep the batteries topped off when we leave the camper at the lake for extended periods. My wife and I generally pull the camper ...
Forum Discussion
pianotuna wrote:
two words
Voltage Drop
Yep. Rated cable ampacity, i.e. max current that the cable can carry before it melts down, is a different thing.
Voltage drop exists with MPPT controllers as well, but far less important than with PWM because currents are lower.
Ex, with MPPT #10 cable would suffice for arrays up to 700W if not more.
With PWM you'll need at least #8 for planned 400W - BFL is probably right about this, I never owned PWM - and you won't be able to expand to 600W that SC-2030 allows.
It's also nice to be able to use MC4 extension cable all the way to controller, and I doubt they come beefier than #8.
