I'm gearing up to install solar power on my RV and I've got a couple of options for connecting my inverter. My RV is a 50 amp model and I'm quite set on creating a reliable energy storage system with solar. The basic flow from the panels is set up as: Panels -> Charge Controller -> Batteries -> Inverter. Now, I'm stuck between these two methods:
1. Using a NEMA 14-50 outlet to connect the inverter, then plug my RV in with the existing 50 amp shore power cable. This seems simple because it avoids tampering with the RV's electrical system and allows me to share power with others. However, I'm worried that the additional wiring might cause significant efficiency losses, but I'm unsure how bad that would be.
2. Connecting the inverter directly to the control panel via a transfer switch. This should be more efficient, especially since I'll be relying solely on solar. The drawback is that it complicates the existing, proven system and I need clarification if the inverter should also connect to the shore power through this switch.
I'm considering the EG4 6000xp inverter with two 48V 100Ah batteries and an 1800W solar setup. The other option is the Sungold Power inverter by SRNE which is much cheaper, but I'm curious about any major differences between them besides single vs split-phase. I could work with a single 30 amp phase if it saves costs, primarily since my AC and fridge can directly hook up to the batteries with a step-down converter.
1 Answer
The best approach here might actually be a bit different than your two options. Instead of the direct inverter connection or the shore power plug, consider routing your existing RV power inlet to the Generator/Grid input on the EG4 6000xp. From there, you can connect the inverter's output directly to the control panel. This setup allows the inverter to both recharge your batteries and pass power from the shore when it's connected. And if you're not on shore power, it'll kick in to use battery power seamlessly!
Thanks, that clears up my side note question! Do you think going with option one would be so inefficient that it really isn't worth it? I do like the idea of just using my plug to easily share power as needed.