Using a 24vdc battery for my RV inverter. 1/2 current of my system is 12 VDC and generates less heat. This little sealed box controls my entire 12V DC system in my RV. 40 amps more than my 30 amp master switch and it's a very efficient device. Sealed and with plenty of cooling fins, I'm not worried about overloading it. It is possible to install it outside of my PSU as it is in a metal case and I consider it safe. Wires of sufficient gauge to withstand 40 amps. Raised to 30 and almost not heated.
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