pianotuna wrote:
Hi,
Since you used nominally 12 volt panels MPPT technology was not needed.
A 30 amp controller can not accommodate all the output at solar noon from 540 watts of panels.
Enjoy the system.
All if means is at solar noon, if the batteries need it they will get 30 amps instead of 39 amps
But what it really means, is that he will get close to 30 amps long before Solar noon, and by SN, his batteries will have received enough charge, they will no longer be absorbing that much and would not accept 39 anyway
I have 505w of panels and a 25 amp blue sky controller, and very seldom see 25 amp battery charge
The rare occasions are when the cloud cover/overcast breaks up late in the day and I get full solar output with batteries at low soc
His controller will limit to 30a, there will be no damage or problems