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Hi there all, this is my first post. I am DIY novice, building a control panel for my 5 axis CNC router. I need help with a few questions. I have 5 power supplies that are 220 volt. Is it an acceptable practice to fuse just one leg of the power input. It seems when using fuses instead of a circuit breaker that trip both legs together, Using a single or double fuse would protect the unit. It seems the problem is if one or two fuses are used, just one fuse would blow and the other leg is left hot, is that a problem? Can I fuse just one leg? Next question. Should I use the same grounding buss bar to ground everything. The main 220 volt power input, the computer, the DC power, the DC control circuit, the machine tool, the stepper motors, VFD, everything? Is there a potential for a ground loop or any other problem? Thanks for your help onthemarc
