Originally Posted by Sagecoachdriver
After our last two trips to Yosemite, I realized I need to get some panels on the roof. My Renogy portable 100watt suitcase just isn't enough. Plus I have to pull it inside when we go hiking for security reasons.
Benagi, I read your thread back in February, did you buy yet? You are looking at the same ones I am. I have been researching and have decided on a tilt mount because of the multiple screw holes along the track for securing it to the roof and having the tilt option if needed. I also want to get an LCD display controller. I thought about 20 amp, but if I decide to add a third panel or use the Renogy 100w suitcase, it won't handle it. So 30 amp it is. Wow! 300 watts and 17.25 amps. Renogy's ViewStar 30 amp is costly, but it has a remote option, so the big controller can be tucked away in a compartment.
HopHead down in Burbank mentioned he was thinking about doing solar too. Maybe have a solar install party down at the beach.
Time to quit talking about it and just do it! It's going to be hard drilling into a perfectly good NEW non-leaking roof!
I am just finishing my solar install. I went with...
Renogy 150w panels - 3 for 450W... $199 each free shipping ... about 39" square
SC-2030 PWM 30 amp controller (protected with an airconditioning cutoff panel with 30 amp slow blow fuses)
TM-2030 monitor (man is this nice!)
500amp /50mv shunt (I also went with a Magnum MS2012 Inverter charger) less than 800w inverter would only require 100A shunt (want to buy one?)
Wired from panel to controller (and on to batteries) to produce <3% voltage drop 10 ga from panel (MC4s) to 6 ga to combiner then 4 ga to controller and battery bus (#2/0 from bus to batteries)
Renogy supplied the MC4s so I can unplug at the panel, and soldered / crimped 10 ga to it to go through the roof
I drilled 3 holes... one under each panel so no wiring is exposed to the elements. A short piece of 10 ga that I screwed a clip down close to the hole and buried it all in self leveling EPDM sealant
I made my own mounts, but wouldn't do that again... spend the bucks on good tiltable SS mounts.
My 4 230AH 6 volt GC2s are cabled with #2/0 with <5' from Inverter to batteries.
At 10 AM the day I checked I was getting 18+ volts into the controller and 14.6v at over 20 amps out. The panels should be good for 25 amps.