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So many people in #VanLife groups putting their lives at risk with their #Solar systems. The problem is inverter size vs system voltage. People are running 3500W and even higher wattage inverters on a 12V battery bank. That's 300A of current!! Not only do the wires need to be massive, expensive, and hard to negotiate around curves, but at those current levels you'd need to constantly monitor the torque on the connections and any heat build up in the wires.

Every connection is going to have some resistance. The higher the current the greater the voltage drop/heat build up through that resistance. This then causes thermal expansion/contraction which will loosen those connections resulting in even higher resistance and heat. Note the positive feedback loop. There's very little room for error at such high current levels. the same process can happen with a poor crimp.

12V is fine up to 2kW. 24V to 4kW. Anything above that and you should just go 48V.