Electrical Color Code differences

Old 06-20-23, 07:26 AM
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Electrical Color Code differences

I recently purchased a machine that was made in Taiwan, 220v 1 ph.
The color coding on the wires are Brown, Blue and Yellow/Green.
The Brown wire has an 'R' on it and the Blue one has an 'S'.
In my shop, the 220v is wired as follows: Black, White and Green.

My question is this: does the Brown wire from the machine connect to the Black wire from the shop?
Old 06-20-23, 09:58 AM
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You don't state what country you are located in , I am assuming different from Taiwan, so can't comment on color code. In the USA the single split phase is 120/240 vac, 60 hertz.
Old 06-20-23, 10:12 AM
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Per Wikipedia, 220V in Taiwan may be 3-phase. Post a oicture of the motor's daraplate and tell us in which country you are located.
Old 06-20-23, 06:03 PM
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Assuming that this is a home shop your voltage is 240 volts between hots. Some machines from other countries require exactly 220 volts so you may want to check that with the manufacturer.

If you are connecting the machine to 240 volts the white wire is actually a hot wire and should be reidentified as such using marker, tape, or paint. (any color other than white, gray, or green.

It doesn't matter which machine wire connects to the black and which wire connects to the white. Just make sure to connect the green/yellow to the ground.
Old 06-20-23, 11:05 PM
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In Europe, Blue is neutral, Green/yellow is ground, other colors are Live. In Norway we have many places with old systems without N and a 230V where the 3 phases was calla R,S and T
In the US 240V system I would have tried The green/yellow to your green. The two others to yours Black and White. I would also have tested the wiring with an ohm-meter or with a megger to confirm that green/yellow goes to the metal parts of your tool, and that the others does not. 220V 50Hz equipment does usually handle 240V 60Hz without problems. I guess this confirms what Tolyn has written too.

Last edited by d_s_k; 06-20-23 at 11:07 PM. Reason: spelling

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