I scored a Powermatic 1150a Drill press (and now I have questions)

[Bob Vaughan]

The overspray actually defines it as original Powermatic.
Powermatic painted the blue Leeson motors to match the machine they were building at the time. This practice continued through several decades. Below is a 1980s motor on the right that clearly shows the Leeson blue where the gold paint didn't get to.

1 leeson - 1.jpg

Google motor frame size dimensions. A 145TC frame has a 7/8" shaft. A 56 frame motor has a 5/8" shaft. Reading some overall dimensions and comparing them to your existing motor should tell you a lot.

[Jeff Burt]

I'm excited for you. I picked up an 1150a with step pulleys a few months ago and it's been fantastic. I'm really curious as to what the electrician says. Mine had a 3/4 hp baldor motor

[Aaron Hoover]

Okay, so I did a bit more sleuthing over at OWWM.org, and the consensus (based on the wiring) seems to be that it's a single phase, dual voltage 115V/230V motor that was just badged incorrectly. I'm going to measure the spindle RPM with a tachometer in the next couple days to verify that it's a 1725 RPM motor, but things are looking up!

Thanks for the all the help and suggestions.