I just bought a double head notcher with 2-10hp 3 phase motors they were wired 480 volt I only have 230 volt 3 phase from a converter. I put 2 starters to match voltage and motor size.what's the prob.

SOURCE: how to wire it up

if the unit has a starter on it there will be 2 terminals at the top of the starter connect the incoming wires two these terminals making sure that the 2 wires do not touch each other. If unit has only a pressure switch the wires should be tied to the terminals marked line , 1 wire per terminal please.

SOURCE: I wish to rewire a single phase electric motor

The motor itself should have a sticker which describes the wiring for 115. It is a small change involving a single wire moving from one pole to another inside the motor starter cap (the bump on the motor itself).

SOURCE: converting 3 phase compressor to single phase

Start w/ a single phase motor. Or maybe your question is just confuseing me.

SOURCE: Electric Motor running slow

Century / Magnetek motors are used on many compressors but usually is an upgrade to have the option to easily switch from 110 to 220. Dewalt, Rol Air, Jenny, Emglo and others are considered high end compressors and come with switch for selecting voltage. One still must change the cord if selecting 220v setting. One thing in common is that 115v motors are never more than 2-3 HP because the amp draw for anything over 2hp is likely higher than 20 amps and would trip most common outlet breakers. You noted that your motor sticker lists 6.5 hp at 15 amp 220v so it could not work with 110v because it would draw over 30 amps and just not be practical. Magnetek motors are very good quality and most always state on sticker 110/220v and show wiring diagram for proper connection. Your compressor was most likely built to be stationary and be hardwired into an outlet/switchbox with heavy duty wiring or special cord to run such a high hp motor. You made a great buy however, because the motor alone lists for several hundered dollars alone. You could replace the motor with a 110v but you would loose the fast performance / recovery of that 6.5 hp motor. Like replacing a v8 engine with a 4 cyl. but expect to pull same load, not likely. Good luck with your purchase, and post again if you have other question.

Testimonial: "Thank you, I was starting to think so too.Just don't have the knowledge to say "your right".At this time it'd be easier to change motors. Thank you again. J"

SOURCE: I purchased a 60 gallon

There may be a wiring diagram either on the body of the motor or inside the wiring terminal cover.
A.O. Smith can be contacted at 800-262-6484. If you do call, have pertinent motor info ready.