I'm setting up a piece of lab equipment that needs 220v-260v to operate properly. The room it's located in has a a 480v 3-Phase service, in the form of a California Standard 50Amp twist-lock connector. It has a large outer ground terminal, and what I assume are 3 "hot" terminals.
The device in question had a 3-prong 240v plug, which I have removed. One Ground, one Hot, one Neutral.
Based on my reading, I believe I can connect the device by wiring Neutral and Ground on the device to the service Ground, and Hot to one of the 3-phase leads. Each lead should be about 440/sqrt(3) volts relative to ground, which is correct for the device.
I've been told that using only one phase of the 3-phase power is not something the transformer is designed for, and so the power factor will not be good, and the full 50amps will not be available. Needless to say, I need about 10 amps, so I assume this won't be a problem.
Is this feasible? Is there anything i'm missing?
And don't worry, I'll someone look at the cable after I set it up. I'm an EE student so I thought I would give it a try at least.