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I am designing a machine that is on casters. The customer has a location specified for this unit which does not have 3'6" available on any side once in place. The supply is 480VAC 3PH 30 AMP. Does the 3'6" rule 110.26 apply or can we specify that the unit must be taken to safe location for...

Understanding the majority of the wiring conventions in most of the European prints I have come across, I have run across something I can not find information about. I am talking about a particular column (say column 2). Going into a 3 phase device the wires are labeled 221 222 223. On the load...