Help with Design for multi RV charging setup

[OkanoganJim]

Well who doesn't want to be cool. But to bring in Grid power, I need to open up a road, ditch in Primary power, purchase a Grid transformer, then since this is Commercial, pay an electrocution to setup a meter and a service, and wire each bay. My RV which is inside the building has a solar panel on the roof that maintains the battery. Only problem is, its now inside. So this is my inspiration for trying to design this system. This building will store RVs, so only a maintenance level of charge is to each bay during daylight hours is what i am trying to achieve.

[SunEagle]

First I would do what sdold state by running grid power to that building.

If that is impossible (I do not mean expensive because solar is much more then a grid run, I mean impossible) I would look into a charging system for each RV bay involving panels, CC and batteries. For you to run all of the charging from a single battery point would require very big wires as well as an increased cost for the system.

No one said a solar/battery system was cheap and easy. So unless you just want to be cool and spend a lot of money find a way to get grid power to that building.

[OkanoganJim]

I don’t have power to any of my buildings. Bringing in Power is a 10-15k investment for me. I am wanting to try this as an interim phase to get by for a few years, or maybe if it works fantastic, that will be all I need. I guess I should have mentioned this in my post.

Thanks

Jim

[sdold]

Hi Jim, welcome to the forum. Any chance you could just run a 15A AC circuit to each bay for a battery tender? It would be a lot simpler and cheaper in the long run.

[OkanoganJim]

I need some help with designing a system. I have a building that is 99 ft long and has 7, 14 ft wide bays for storing RVs. I would like to build a system to provide 12-volt solar power to each bay for the purpose of keeping the stored RVs battery charged. The end of the building faces south and here is where I would like to mount the Solar Panels. To dip my feet in the water, I recently purchased 2 Coleman 100-watt Solar Panels with battery controllers from Costco. I am thinking I can buy 5 more and end up with one 100-watt panel for each bay, at least to start. I suppose the easiest design would be to run wires from each panel to each bay and then to the controller. But Since the building is 99 ft long, worried about voltage loss to the farthest bays. Wondering if there is a design that could have a main buss of two heavy gauge wires (like 6 gage) running through the bays and each bay would tap into it then to the battery controller. Something like a household circuit except its bening fed by 7 100-watt solar panels. If this is feasible, should the panels be wired in series or in parallel? If in series, would I need something to drop the voltage down for each bay, prior to the battery controller? Thanks for your help.