One method would be to use an ohm meter to determine the stator winding
connection order.
If you don't have an ohm meter, you could possibly find the info on a
Panasonic website.

A PSC motor's windings are two identical windings connected in series.
(1)---------(2)---------(3)

The ohm meter check will show which leads go to the windings' connections,
and also confirm that the two windings are identical (indicating that the
motor is a PSC type).
The resistance readings from 1 to 2 and 2 to 3 should be nearly identical,
and equal to the reading from 1 to 3.
If the readings are significantly different, the motor may be faulty.
A resistance reading of infinity (over range, on some DMM meters) should
typically be seen from all winding leads to the motor case.

The use of proper safe wiring techniques will prevent you from being
injured. Use a grounded lead attached to a bare metal spot on the motor
housing (standard 3-wire AC cord).
Insulating the wiring connections properly will eliminate a safety hazard.

The capacitor is connected to terminals 1 + 3, and they are to remain
connected to them.
One AC line connection is connected to terminal 2, and is to remain
connected to it. I prefer the AC neutral lead for 120V motors, so the motor
isn't at line potential when the power is switched off.
The second AC connection (line for 120V) is fed by a switch to either
terminal 1 or 3.

Using a center-position-off double throw switch will allow the 120V motor to
be started in forward or reverse without changing the lead connections (and
also provide an off position - center).

For 240V motors, the safe method is to provide a double pole power switch to
disconnect power from the motor when it's stopped/off. A separate switch can
be used for changing fwd/rev.

There are other start/stop and fwd/rev switching methods that can be used
for a variety of applications.

Attachment of power leads at random to a motor isn't a good practice. For a
PSC motor, the motor will run properly if the power is applied in 2
different configurations (with the capacitor connected), where many other
types of multi-lead AC motors won't.
It's always best to find the motor manufacturer's recommended power
connections.

WB
...............

"Emmo" wrote in message
...
I just got one of these exact motors - 2.99 on eBay, small, Panasonic,
with
the data sheet in Japanese. Came with its capacitor. My only problem is
that
it has three wires (bl, wh, grey) and I don't know how to hook it up. Can
anyone help?

Thanx!




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