I've got a solar setup at home with 10kWh of batteries connected to an inverter, alongside a trailer that has its own solar panels and 20kWh of batteries. The trailer has 4 solar panels, while my house has a setup of 12 panels (2 sets of 6 in series). The house panels charge the batteries really fast, but the 4 trailer panels take forever to charge the trailer's batteries. I'm considering using a Y splitter to send power from one set of my house panels to the trailer when it's parked outside. If I turn off the DC breaker for that set of panels, will the power flow to the trailer's inverter instead? I think it should, since the breaker is off, but I'm looking for some advice on this setup and whether it's safe or if there's a better solution.
1 Answer
It’s generally not a good idea to connect solar panels to multiple controllers—even if you think you can turn one off. It’s easy to accidentally forget, which can lead to some serious issues with your system. Instead, consider using a DC switch to manage your panel lines or maybe look into a DC-DC charger to safely transfer power without letting the systems fight over the charge. That way, you avoid potential problems completely!
I get that, but I'm planning to turn off the breaker (and I could unplug it if needed) to avoid that problem. Just looking for the simplest solution here!