Hey everyone! I'm looking for some help with expanding my solar power setup. I currently have four 12V 150Ah batteries from Eco Worthy and I want to up my game without breaking the bank. A bit of background on me: I have an engineering degree and eight years in electrical and lighting controls, but now I'm a general contracting superintendent. I jumped into this solar thing to power my newly started woodworking business, which has taken off. I have a 3000W modified sine wave inverter and I'm running a few tools, lights, and a 12,500 BTU portable AC in my workspace. I'm trying to figure out if I should switch to a 24V system or go straight to 48V for better efficiency. Any recommendations on how to effectively expand my setup? What should I avoid? Thanks in advance!
2 Answers
You’ve already invested in a modified sine wave inverter, which isn't great. It might be good for basic tools, but for things like AC, you’ll need a pure sine wave inverter. Make sure your chosen inverter can handle not just the constant load but also the surge from things like your air conditioning system. And yes, ensure the system is well balanced and planned out as you progress. It's better to invest in the right inverter and batteries now than to keep patching up an inefficient system later.
The first move is to stop buying more equipment right now. You need to assess the actual power requirements for everything in your shop, including tools, lights, and your AC, before adding more batteries or changing your inverter. Calculate the total watt hours you need each day and see how much load each device draws. From what you've mentioned, a 12V or even a 24V setup might not cut it for your full shop requirements. Switching to a solid 48V inverter and battery system is probably your best bet for both efficiency and future scalability.