THE CENTER PIN IS SHUNTED CORECTLY !
Trying to use a little welder in my barn. The welder wont run in modified sine wave so I upgraded to the pure sine wave unit in 5000watt 12v volt. The welder starts and sounds normal but wont weld. Just get an overload alarm on the inverter. The instructions say that if your unit comes with more than two cables (1 positive and 1 negative) that you must use them all. Mine came with 2 of each in #4 gauge. No chance! Didn't do anything. I ended up upgrading the cables to 0000 (4/0) gauge and added four more batteries (8 total) to get the welder to work.
Allt perfekt!
Worked for our needs
I have ordered one it didn't charge by the solar panel and got a replacement and it's doesn't charge either and it's in the middle of a open field not worth buying and will not buy another one

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