The solar install is the most involved, costly, time consuming, and exciting mod done to date. The difficulty is not that bad but the idea of drilling holes in our new trailer including the roof is not terribly desirable. Lots of research went into choosing all the components and I gained a lot of information from Handybob.
Lots of good solar and battery information between all the ranting.
I decided on;
Two 6v Rolls S-290 Golf Cart batteries
Trimetric 2030RV battery monitor
Trimetric SC2030 charge controller
Two 150W "12v" panels for 300W total
10AWG wire from panels to combiner box (very short runs)
6AWG wire from box down to the charge controller (~10')
4 gauge jumper cables out to battery (big cables, not sure why they are listed as 4 gauge)
I wanted short wire runs and easy wire runs so I decided the combiner box was going up front and I would drill straight down through the roof into my bedside closet. Then continue straight down into the pass through storage area. This worked out great. Better than I expected. I used a 1" spade bit and drilled through the roof and then ran my 1" conduit down and marked where it hit the bottom of the closet, drilled, lowered the conduit further, marked the top of the bedside table, drilled, and I was in the front pass through. The conduit is visible right up against the wall for ~1.5' between the closet and top of the bedside table but is otherwise hidden from view.
The conduit run allows very easy wiring upgrades in the future if I need to. As is the 6AWG wire should allow me to add a couple more panels without having significant voltage losses. I am at 0.76% drop right now (calculated) with two panels. So 1.5% drop with 4 panels if I need to add.
Screwed the box down and sealed it up and then started installing the brains.
I mounted everything I needed on a board before hand which helped a lot and saved some install time inside the pass through area.
Near the top of the board is the breaker to connect to the + solar wire and a stud to connect to the (-) solar wire. These both feed into the charge controller and then out into another breaker (30amp) and to the shunt. The phone cable goes to the battery monitor and the small wires also go to the battery monitor. It is all very simple wiring without including a big inverter. But I have left room on the board for an inverter later on if needed.
This board is then secured to the front of the trailer and wire lengths were determined and secured. I had a little extra wire!
Panel install next.....