Solar Panel Disconnected from SUN
I am planning installing 4X140W panels(parallel)flat mounted going to 15A breakers(so they can be switched off if needed) to the charge. The panel have ISC of 7.50 each times 4 equal 30. The controlle...
Forum Discussion
jrnymn7 wrote:
It has been recommended to allow at least 20% of head room. Don't forget, current creates a lot of heat, so you need to oversize your controller considerably. I went with a 30 amper for my pair of 140w/8.15a Isc panels. I wouldn't go with anything less than a 50a controller with your panels, especially being in a cooler climate such as yours.
And make sure you wire accordingly, to avoid excessive volt drop.
I always do my own work and go with heavy wire than needed. So wiring voltage drop should not be a problem.
