MrWizard wrote:
Got it. However, to repeat, my PWM Solar30 only claims to be able to do 30 amps and has no panel wattage mentioned. It is up to you to not go over the 30 amps and the 48v Voc using whatever panel wattage you choose.
at least they seem to be making an honest statement and NOT putting a watt limit that keeps you from reaching the rating
this what we need to see more of
the input equals the output
or NO qualifier input that is lower than the stated output
is there a solar 40 ?
that prostar is nice..morningstar has quality controllers
I seem to recall seeing a time or two on Ebay or somewhere else, a Solar 60 model that was for sale, but my memory may be a little rusty.
Solar 60Or split panels and wiring, do a little redundancy and parallel two solar 30's.
My take on it is that it will flow up to 30 amps, regardless of voltage, be it 28 or 30 for 24v system, or 17-19 for a 12V recharging system.
Watts are not mentioned, or I failed to acknowledge them. I guess it's a current limit, not so much a voltage limit, so they find watts a bit irrelevant or confusing.
Simple way that I see it, being a non EE type. Total up the lsc on your solar panels, and if the total is 80% or less of what the PWM Solar 30 or solar 60 charge controller is rated for, you should be fine under a worst case scenario. I would consider that a safe and adequate margin for design, at least for me. If the charge controller goes belly up, well, then, I've got some super duper good solar panels that were underrated... something highly unlikely to happen or come out of China these days. They'd sooner short you than give you more without charging you for it.
