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How do I wire this AC motor to a UK plug? Answered

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When wiring this 220V, 60rpm AC motor to the mains, it turns perfectly with the live and neutral wires connected to terminals 1 and 2 and with the earth wire disconnected from terminal 3, however it does not turn when the earth wire is connected to terminal 3. How do I resolve this when wiring it to UK mains?

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steveastrouk (author)2017-01-24

It should still have an earth connection, put it on one of the mounting screws when you assemble it with a crimp on ring terminall

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iceng (author)steveastrouk2017-01-24

+1

Ditto, while I would think the 4 mounting mounting holes would mate with the assumed metal frame to provide that earth protective ground...

A frame, that links the low RPM + Torque reaction, with a [ stop, start or reversing switch ] that supplies the safety ground at the point power wires enter the machine.

Steve you would know. Are the UK tools, lathes and heavy machines double_insulated or how does England provide a safety ground to a two wire outlet ?

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rickharris (author)iceng2017-01-25

We don't have 2 wire outlets in the UK any more. All wall sockets have to have an earth. Even lighting circuits will be twin and earth cable with the frame/pattress box of the switches or sockets earthed,

Although many hand tools are double insulated all metal bodied tools like a lathe will have to have the body earthed even though the motor may or may not be double insulated.

In general Steve is right a crimped tag should be inserted between the motor body and the lath mounting to carry an earth connection. I would also clean off the paint there to give a good earth to the motor frame as well.

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iceng (author)rickharris2017-01-25

Thanks Rick,

I can now throw away those 2 prong travel converters that clutter my shelves.

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rickharris (author)iceng2017-01-26

They fit other parts of the world!.

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CassiaD (author)rickharris2017-01-25

Thank you everyone. This has solved my problem perfectly.

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icengBest Answer (author)2017-01-24

Looked it up on google image search.

Use 1&2 for clockwise rotation..

Use 2&3 for CCW counter clockwise rotation...

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Josehf Murchison (author)iceng2017-01-25

Looks like a capacitor run reversible motor made for a permanent reversible hookup.

Live 1

Neutral 2

Ground body

Reverse direction:

Live 3

Neutral 2

Ground body

"Counterclockwise"

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iceng (author)iceng2017-01-24

And the pictures.

Click on them to see all !

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CassiaD (author)2017-01-24

Thank you for your reply. I have since had help solving my question by connecting the earth to motor housing and other wires to terminal 1 (or 3 to reverse direction) and 2.

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