โAug-10-2015 05:12 PM
โAug-14-2015 11:08 AM
Canadian Rainbirds wrote:Bypass diodes should alleviate that problem.
The one drawback to series panels is the basic rule (from Ohm's Law) that in a series circuit the current remains the same throughout the circuit. This means that if one or more panels is shaded, the total current will be what that panel produces, even if it is only an amp or two..
โAug-14-2015 11:01 AM
โAug-14-2015 08:51 AM
christopherglenn wrote:
They are 30+ volt panels, 310 watts each. The charge controller will down convert the voltage and increase the amps. Combined into discharged batteries it should bulk between 40 and 50 amps, absorb is whatever the batteries can take (plus other loads).
I plan on (5 year plan) having 2 mid ship, 2 over the garage (Toy Hauler). I am planning on sliding racks so I can stack one on top of another, normally having 4 exposed, once set up deploy the second set and have 8 on the roof. Sliding out from under the static panels with linear actuators it is a push of a button to deploy or retract. Tied into the slide control so when the slides retract the panels retract (manual deploy) should keep me out of trouble.
2400 watts of solar on the roof should run 1 ac easily as well as charge the batteries at the same time, and reduce need for the genset to when multiple ac's are required.
We will see in 5 years what actually happens....
โAug-13-2015 02:45 PM
โAug-13-2015 01:06 PM
christopherglenn wrote:
I am looking at putting a pair of THESE on my roof, sandwiching the AC between them. I should be right at 102 inches wide (trailer is 102) and with a MMPT controller, close 40 amps to the batteries.
$630 for the panels, and another $607 for the MMPT CONTROLLER.
โAug-12-2015 02:45 PM
โAug-12-2015 05:53 AM
โAug-12-2015 04:51 AM
kbehrent wrote:
Any recommendations for 100W panels and controller? Are they usually paired or do you buy the best panel for the money and than buy the controller separately?
โAug-11-2015 08:16 PM
โAug-11-2015 12:15 PM
โAug-11-2015 10:45 AM
kbehrent wrote:You'll find 120-135 panels more popular. No, yes, then, yes.
Any recommendations for 100W panels and controller? Are they usually paired or do you buy the best panel for the money and than buy the controller separately?
โAug-11-2015 07:45 AM
โAug-11-2015 03:18 AM
โAug-11-2015 01:14 AM
kbehrent wrote:pianotuna wrote:
232 x 2 = 464 amp-hours.
Minimum solar panel size no less than 279 watts
If you plan to use the inverter much then the sky is the limit on solar wattage.
I'm looking at @ 400W of solar. I really don't want more than 4 panels so I'm limited to that. I don't want to attach them to the roof, so I'll build/buy a portable stand. I realize I might not get the best optimization this way, put I like the portability of it in case I want to use the panels for something else if not being used for the motorhome.