12v and 110v and techquestions
Hello, I have just started to look for my first RV travel trailer and I had a few questions. First off I am am a bit of a tech lover. I do well with wiring diagrams and schematics, but I just ca...
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all of the of the MPPT controllers I saw out there(till today) only allowed for 35v-85v open circuit voltage from the panels. meaning I could stack about 2-3 panels in series and get really close to blowing up the MPPT from an over voltage event when it got cold out side, and possibly end up with a lot of amperage running through mC4 connectors. almost 6 amps a pannel(my goal is to slowly add pannels as long as there is space). The series configuration, to me in my mind would alow a much simpiler installation and avoid long runs of wire(the pannels would bridge the gaps) and avoid using heavy gauge wire by going to a higher system voltage.
I did find find a controller with 72amps charge and a 150v input rating. meaning in theory I now could place 5 pannels in series with the 12v system, or about ~6 with the 24v.Before I was looking at all in one systems, as seen as part of some solar kits an inverter/charger/mppt for solar.
by some really rough math, and unobstructed roof, I can put about 14 pannels, 2 widthwise by 7 length wise, minus the skylights, and the fan over the bath, which might whittle down to 11-12 pannels with some tetris skills.
Overkill yes, but its an incrimental process, I figure which ever road I first start with I kind am stuck with.
The midnight solar classic MPPT line I stumbled on, makes it possible for me to go 12v, I am still pondering the 24v, and yes I kicked the 48v idea. Half the wire diameter (in therory, could be very helpful at hiding it.) The original 12v system is going to remain separate from the Solar MPPT/Inverter/Charger setup, so 12v vs 24v will probably come down to price and a little bit of ease of wire management.
~$3500 for a 1200watt system with 3.72wh of storage (possible federal rebates?)
My initial build will probably be $2500, or the full gambit if there are rebates.
I did find find a controller with 72amps charge and a 150v input rating. meaning in theory I now could place 5 pannels in series with the 12v system, or about ~6 with the 24v.Before I was looking at all in one systems, as seen as part of some solar kits an inverter/charger/mppt for solar.
by some really rough math, and unobstructed roof, I can put about 14 pannels, 2 widthwise by 7 length wise, minus the skylights, and the fan over the bath, which might whittle down to 11-12 pannels with some tetris skills.
Overkill yes, but its an incrimental process, I figure which ever road I first start with I kind am stuck with.
The midnight solar classic MPPT line I stumbled on, makes it possible for me to go 12v, I am still pondering the 24v, and yes I kicked the 48v idea. Half the wire diameter (in therory, could be very helpful at hiding it.) The original 12v system is going to remain separate from the Solar MPPT/Inverter/Charger setup, so 12v vs 24v will probably come down to price and a little bit of ease of wire management.
~$3500 for a 1200watt system with 3.72wh of storage (possible federal rebates?)
My initial build will probably be $2500, or the full gambit if there are rebates.
