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12th October 2020, 02:51 PM #1SENIOR MEMBER
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Reverse Single Phase Motor - Re-wire
I went to connect up a motor (run of the mill Chinese 3HP motor) to a saw I am restoring on the weekend. (Can read about it here: Wolfenden Table Saw). The motor comes with a Double Pole Single Phase Safety Switch (KJD178 IP55). This is pretty handy but incorporates a little bit of complexity as it has two leads running to the motor.
1) The power source
2) The actual ON/OFF switch
When I did a test run I realised the motor is spinning clockwise. On any other motor I've had it's had a terminal box and you can just switch around bridging to re-configure it per instructions on the motor. On this motor it doesn't have a terminal box OR instructions. I assume it can be reversed (can't be more than about 10yr old motor). From the drawing I've done up is someone able to advise what config needs to change to make it go anti-clockwise?
Wiring.jpg
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12th October 2020, 03:17 PM #2.
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Reversing an SP motor requires reversal of EITHER the main/run coil leads OR start coil leads. On your motor it appears this cannot be achieved outside the motor and the motor has to be opened up, the relevant connections broken and remade. This is not a task for most DIYers - suggest you take it to a motor reminders.
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12th October 2020, 05:12 PM #3DISCLAIMER
No liability is accepted by UBeaut, the Wood Working Forum's
administrators or moderators for advice offered by members
posting replies or asking questions regarding electrical work.
We strongly advise contacting a licensed
Tradesperson for all electrical work.WARNING
Information supplied within posts is not to be considered
as detailed formal instructions to complete a task.
Members following such information do so at their own risk.
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12th October 2020, 08:43 PM #4SENIOR MEMBER
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Thanks Bob, I think I'll keep this motor for one of the bandsaws I am restoring and buy a new one - simple way out and cost effective
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14th October 2020, 06:51 PM #5SENIOR MEMBER
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