Since I live in the United States, my wall outlets are at 120V. I rent my home, and I am pretty sure the only 240V source is for my oven, which I cant really even move to get to. I have read some bad things about 110/120V VFDs and spindles, and want to go with a 220V +/- 15% VFD that powers a 220V 2.2kW spindle. To do this, I am thinking of using a hefty 120 to 240 volt transformer, but since the largest fuse available to me is 20A, I would need to have the transformer on a separate outlet than the rest of my hardware (motors, etc.). I have found a few forums that talk a little bit about this and mention something called a ground loop. I am not quite sure what this is, and I do not understand how connecting a VFD to one outlet and all other hardware to a different outlet would cause problems if everything is grounded?

Is it unwise to power my CNC with two different outlets?

240V outlets really isn't an option since my landlord likely will not allow me to change the outlets.