DRV Full House JX450
System Schematic

Basic Parts List

Installation Notes

This installation was completed in October of 2024.  I began communicating with the owner of this rig in June of 2024 about a system and installation.  The owner wanted a robust system that could handle running an air conditioner or two and allow him to live like he was plugged in, whether he was or not.  I put together a system proposal consisting of dual 3KVA inverters, 3600 watts of solar and 1000 amp hours of lithium batteries (among other things).  Based on our back and forth conversations, he accepted the proposal and we eventually set an installation date.

The owner purchased this RV new and was living in it full time (although mostly stationary due to current employment).  The owner planned to retire soon and wanted to get the RV ready for full time travel.  The installation went pretty smoothly.  The RV had one set of 10 AWG wire pre run from the roof to the OEM battery compartment from the factory.  I utilized this wire for one of the solar controllers and pulled two additional runs 6 AWG wire from the roof for the two other solar controllers.  I then basically filled the roof with as many 200 watt panels as I could fit.  I divided the panels up evenly into three sets of six panels each going to each of the three solar controllers.  The panels were wired in 3 series 2 parallel (3S2P) configuration.  The panel layout still allowed for a decent walking path on the roof for maintenance along the length of the trailer.

Once the arrived and dropped off the rig, I spent the first day of the installation coming up with the best layout for all the batteries and system components in the basement of the RV.  DRV 5th wheels and toy haulers do not have any hidden spaces behind walls to place components so they all have to go in the OEM storage compartments.  I did my best to limit the amount of storage space lost.  This RV had an existing Magnum MMS-1012 pure sine wave inverter charger and a converter from the factory to power the residential refrigerator and charge the batteries.  I left this inverter in place and functioning.  This allows the owner to turn off the new, larger Multiplus inverters during travel or when trying to conserve power and let the small inverter keep the refrigerator running.  I have a similar set up in my personal RV and it is a nice option to have.  I also unplugged the OEM converter, but left it in place as a backup battery charger if needed.  I placed the Multiplus inverter chargers in the OEM battery compartment.  I opened up this compartment to the rest of the basement by removing half of the roof of the compartment.  This allowed easier access for wiring and also allowed for more air movement around the inverters.  I relocated the OEM Magnum inverter to the roof of the basement.  The batteries were all placed on the floor of the basement compartment along the generator shroud wall.  The RV had a Mor/Ryde slide tray that I had to move over a couple inches to allow for the batteries to fit between it and the generator shroud wall.  I then built a box over the batteries to protect them and to allow for storage on top of them.  This made for minimal loss of storage in the basement compartment.

The installation  was completed in six work days.  The customer was very happy with the final product and I was able to spend time going over other systems in the RV and how they functioned once the installation was complete.

DRV Full House JX450