I'm setting up a solar system for my off-grid cabin and I'm planning to power 5-6 bulbs, each with their own switches. I noticed that most tutorials overlook how to connect multiple loads to the controller. My question is, since the controller has only one output, can I split this output to a junction box or a splitter so I can run multiple bulbs? I've found some 6W, 1100 lumen LED bulbs that work with a 12V, 75-100 mAh battery. Also, if I run a wire 30 feet from the controller to the bulbs, will I experience any significant amp loss?
3 Answers
Absolutely, splitting to a junction box is a common method. Using 12AWG wire for your 30ft runs will help mitigate voltage drop. Just remember, at 12V, it’s crucial to keep an eye on any loss in voltage especially if you’re running multiple bulbs.
You're on the right track! You can definitely run wires off your battery to a fuse block to connect all your DC loads. LED lights are pretty easy on power, so they shouldn’t be a problem. I have RV-style lights in my own cabin, and they work just fine with 16-gauge wire, even in a decent-sized space.
Exactly! Just make sure you choose a suitable fuse block to avoid any overloading issues. That way, everything stays safe!
Remember, the controller mostly acts as a battery charger, so your bulbs will be connected directly to the battery. When you're running off 12V without an inverter, think of it like a car's electrical system—the battery is your power source, while the controller keeps it charged up.
Exactly! Understanding that distinction can help you set things up more efficiently. You’re gonna have a great lighting setup!

Good point! It's always smart to consider voltage drop. Keeping wire lengths short can also help with that.