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Wiring New 3 Phase Table Saw8/9
Just picked up a used tablesaw that's basically an old Jet. It can be wired 220/480, and I have three phase 480, so that's what I'd like to go with. I'm confused with the wiring, however, as there are only 3 leads coming out, as opposed to the usual 6 or 9 leads for three phase. It came from the building next door, which also has three phase, and I know it was wired this way (not sure on the voltage), but the motor plate doesn't have any wiring diagrams on it whatsoever. Any help would be appreciated, and photos are attached.
All three 240-480 3 phase have three leads.
There are two things you have to check.
1.) The Starter. It is set up for 240 or 480. One of the starters jobs is to shut off the motor if one or more of the legs draws to much amperage. So there is either heaters in the starter or a dial which is set to the correct amperage. If you share a photo of the inside of that starter box I can help you decide what to do.
2.) How the motor is wired. If there is no wiring diagram on the motor cover it is usually inside the wiring connection box on the motor, inside the cover check there. If its wired 480,440,460 then you should be good to go.
Hook up the three wires (and a ground I hope) and start the motor, see what direction it's going. If its going the wrong direction swap two of the wires.
BE careful 480 is not to be toyed with it will hurt you.
What are you referring to when you say 3 phase has 6 or 9 wires. Like Bill said 3 phase has 3 hot wires and a ground wire.