Electrical mod on A-frame popup
I have a Rockwood 122S popup A-frame trailer and would like to make a couple modification to allow for phone and computer use when boondocking. I'd appreciate any input or suggestions? We don't have any plans to use any appliances or TV and have never been to a campground with hookups.
Here's my basic plan:
Install a 300 or 400W inverter wired directly to the batteries using #8 wire (I have 2, 6V golf cart batteries). The positive wire would go through a 30A circuit breaker, then straight to the inverter. The run would be approximately 7 feet.
The ground from the inverter would go straight to the trailer frame. The inverter output would go to one dedicated outlet where we could charge laptop computers.
Install a 12V cigarette lighter outlet by tapping into the wires right near the inverter input. The positive wire would have an inline, 25A fuse. This outlet would be only for charging phones without having to convert to 120 then back to 12V.
Get a 90 or 100W portable solar panel kit such as the Zamp. The trailer came prewired for Zamp solar, though I'd be willing to get a different (read, "cheaper") brand. Given that my trailer is an A-frame, a permanent roof mount is not in the cards.
I'm especially curious about wire size and inverter size. All comments invited/welcomed.
If it would help, I could try to figure out how to post a sketch of my plan.