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Thanks DieselAddict for the advice. I cycled the voltage switch around 30 times and it is working better. Sometimes the voltage between the different phases will vary by around 15 volts. Sometimes the voltage on L1-L2 will show around 240 volts with the Hz dropping from 60 to 58. It seems...

This shows what m-35tom said about moving the board up so that the high voltage arrows (left side of board) are aligned and the voltage confirmed at 416v. The back of the board has a series of copper straps that tie the holes either side of the double rivets together. By moving the board up...

I need the higher voltage to run a 15 hp motor on a compressor. I bought this one for the three phase. Robert

Thanks, I thought the arrows had something to do with it but wanted a more official opinion. As I said in the original post, I have looked through the -10 pretty well but could not get my eyes on it. Robert

I am asking for help in changing my MEP-804A from 120/208 to 240/416 three phase. I have gone through TM 9-6115-643-10 (the one that came with it) and also TM 9-6115-643-24 which covers maintenance more in depth. Attached should be pictures of the voltage reconnection terminal board front and...