Winding Resistance Fractional HP Motor
Winding Resistance Fractional HP Motor
(OP)
We had an issue back tracing some wires through a terminal strip. There are 4 - single phase 110Vac 2 pole motors, each hot wire connected to an individual terminal.
Neutral/Common are all connected on a busbar.
What occurred when i did some continuity tests with a multimeter, was if i put 1 lead on the hot wire of 1 motor, i would get continuity through the other 3 hot wires BUT not through the neutrals.
Kind of thrown off by this.
I thought that with a continuity test, if the resistance is too high (which through windings of a motor lead me to believe that) i shouldnt be able to have continuity through all 4 motors.
Any ideas?
Paul
Neutral/Common are all connected on a busbar.
What occurred when i did some continuity tests with a multimeter, was if i put 1 lead on the hot wire of 1 motor, i would get continuity through the other 3 hot wires BUT not through the neutrals.
Kind of thrown off by this.
I thought that with a continuity test, if the resistance is too high (which through windings of a motor lead me to believe that) i shouldnt be able to have continuity through all 4 motors.
Any ideas?
Paul





RE: Winding Resistance Fractional HP Motor
Or is it the fact that you don't have continuity from winding to neutral that you find confusing? That is also perfectly normal - there is no connection to neutral in a three-phase motor.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: Winding Resistance Fractional HP Motor
Please clarify.
4 single phase motors. Two terminal leads per motor?
Connected to different phases of a 3-phase system?
I assume the motors are off line when the continuity test is performed, is it? but one terminal (to neutral) is still tied to the other 3 common leads?
RE: Winding Resistance Fractional HP Motor
This is a 110 Vac single phase 60 hertz Canadian.
1 hot wire (black) 1 neutral wire (white) and 1 ground wire (green).
(For the UK and Europe, it would be 220/230/240 single phase) which is 1 hot wire (brown), 1 common (baby blue), 1 ground or pe (green with yellow)
We have the motors each on there own switch.
All switches are off.
There is no power applied to any motors.
Yes 1 terminal is tied to the other 3 common leads.
Paul
RE: Winding Resistance Fractional HP Motor
BK
RE: Winding Resistance Fractional HP Motor
respectfully
RE: Winding Resistance Fractional HP Motor
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