230v 3phase

[oldslowchevy]

i just got what i think might be a good deal on a table saw,but it has a 230volt3 phase motor on to from westing house 1750 rpm 4 hp 14 amp though the amps in my mind dont seem to make 4 hp but that is what is stamped on it i do know this is not the right motot for this saw as it is dated 1986 and the saw says oliver model 208-45-b and is dated 1958 the owner says he used to use it in a cabnit shop and when the shop updated there equpiment he got for a good deal and has never used it since(due to the fact it is 3 phase i bet) but what would a good motor be to replace this one with either 120v or 220v singel phase would be fine with me

[PLUMBER RICK]

osc, a 2hp. motor under load will draw roughly 17-21 amps at 120 volts. therefore i would wire this for 240 volt. 1/2 the amps 8.5-10.5.

option #2 get a 1.5 hp. motor with c56 frame. this will allow for a 120 or 240 volt operation with a simple wiring change and will draw approx 13 amps under load at 120 and 6.5 at 240.

i thought you gave up the wood and got into some real work:eek:

plumbing:D:D.


plumber rick:p

[tkb]

You could buy a motor from Ridgid.
They have 6.5 hp motors that run on 120 volts and only draw 11 amps.
Just look at their vacuums.

[biscuit]

That sounds right on the amp draw for "3-Phase" motor. A five hp only draws 15.2 amps at full load.

The problem is , you would have to have a phase convertor to run this, unless you have three-phase power, which is very doubtful. Your best bet is to just buy a new motor for the saw.

Regards,

[oldslowchevy]

That sounds right on the amp draw for "3-Phase" motor. A five hp only draws 15.2 amps at full load.

The problem is , you would have to have a phase convertor to run this, unless you have three-phase power, which is very doubtful. Your best bet is to just buy a new motor for the saw.

Regards,
that is what i want to do i just dont know what i need as far as power and rpm.i do have 220v but not 3 phase

[papadan]

OSC, You want to find at least a 2 hp 220v with the same 1750 rpm. Other wise you would have to change out the pullies too. Check Grizzly for a motor, they have a pretty good selction

[BHD]

you could use a static phase converter, a rotary would be better but it would be more of a hassle as it has to be running before starting the saw, or any other three phase motor, but it does produce superior power,

with a static you could get about 2/3 of your motors rated horse power, with a rotary you could get name plate rating,

I use both a rotary and a static phase converter for a number of years on my (static) Bridgeport mill and (rotary)walk in cooler the rotary must be running before starting the 3 phase motor,

the static changes the phase through capacitors and energizes the third winding to work as a start winding, to get the motor running then kicks out, and then it basically runs on 2 of the 3 windings in the motor,

the rotary is basically a static converter attached to a "fancy" three phase motor, that when it is running it generates the third phase,

I now have three phase ran to the shop, and the walk-in cooler and walk-in freezer,