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1) Beyond the Xantrex Freedom XC inverter-charger system and the Battle Born LiFePO4 batteries, supplies needed include 2/0-gauge battery cable with terminals and heat shrink, fuse, subpanel and GFCI breakers, Romex, wire nuts, electrical tape, junction box, spray-foam insulation and screws. 2) For the AC wiring that runs up to the inverter and back to the subpanel, we used 10/4 GA SJEOOW cable, which is well protected for use in the trailer’s enclosed underbelly. 3) We removed the two 15-amp breakers in the main box for the outlets and microwave, and replaced them with a single 30-amp breaker with 10-amp Romex to the new subpanel, where it was connected to the 10/4 cable to the inverter.
7) Installed next to the RV control panel, the Xantrex Freedom X remote-display panel allows full control and programming of the inverter-charger. 8) The Torklift PowerArmor Max battery box is an attractive way to secure the batteries. We installed a marine battery switch to isolate the batteries while the trailer is in storage. 9) The batteries were wired in parallel and pass through the fuse before going to the Freedom XC. Straps and a movable divider in the box help secure them, and packing foam that came with the batteries was used to pad them.
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