EcoRenovator - View Single Post - What is the Best Volts/Amps arrangement for Solar Panel Output to Controller

Xringer · 09-15-14, 07:58 PM

"Do not connect a solar input greater than a nominal 48V array for battery charging. Never exceed a Voc of 125V."

That doesn't sound right. How would you charge a 48V bank?
My four 125w panels are connected in series (about 70vdc).
Small gauge wire* is what I use to feed my TS-45 charger for my 48v bank.

Since the total current in my system never over 7 or 8 amps, the losses are minimal.

I have also used the TS-45 with with Four 200W panels (abt 120vdc) 9A max and it worked fine..

The wire I'm using for this test is RG-8 type coax cable.. It works pretty good.

Currently, my 800w array is feeding directly into a hotwater heater..

My 48v bank is only for back-up, so my solar mostly goes to making hotwater..

Our A7 hotwater heat pump ran about 6 hours since April..

09-15-14, 07:58 PM	#2
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	"Do not connect a solar input greater than a nominal 48V array for battery charging. Never exceed a Voc of 125V." That doesn't sound right. How would you charge a 48V bank? My four 125w panels are connected in series (about 70vdc). Small gauge wire* is what I use to feed my TS-45 charger for my 48v bank. Since the total current in my system never over 7 or 8 amps, the losses are minimal. I have also used the TS-45 with with Four 200W panels (abt 120vdc) 9A max and it worked fine.. The wire I'm using for this test is RG-8 type coax cable.. It works pretty good. Currently, my 800w array is feeding directly into a hotwater heater.. My 48v bank is only for back-up, so my solar mostly goes to making hotwater.. Our A7 hotwater heat pump ran about 6 hours since April.. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..