Do not connect the neutral to anything. Connect the ground to the ground terminal.
Those diagrams that show the neutral connection are European connection or 3 phase diagrams.
Just trying to understand this. I'll be using a Chinese 2.2kw vfd, power inputs labeled R,S,T. I have a 4 conductor 220v line, 2 hots, nuetral, ground. In some diagrams it shows just 2 hots going to R and S, in other diagrams there is also the nuetral going to T. I understand that a 220v circuit doesn't actually need the nuetral, so why do some diagrams show it being used? Just hook it up if you have a neutral, don't hook it up if you don't have one? What's the actual difference? Is there some advantage to using the nuetral if you have one?
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Do not connect the neutral to anything. Connect the ground to the ground terminal.
Those diagrams that show the neutral connection are European connection or 3 phase diagrams.
Jim Dawson
Sandy, Oregon, USA
I've never seen a diagram showing the use of a neutral. If it is, it's wrong, unless as Jim said, it's from another country.I understand that a 220v circuit doesn't actually need the nuetral, so why do some diagrams show it being used?
Gerry
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OK thanks guys. The neutral wasn't making sense to me. Was pretty sure the only time you use neutral with 220 was if the device also needed 110 for some of its components which isn't the case here. There was at least one diagram that was actually labeled hot/hot/neutral but some of them just showed red/black/white which must have been 3 phase but I assumed was a nuetral. Thanks for clearing that up.
The neutral is often shown for countries that use a 230v phase and neutral such as UK etc, in N.A. the 240v is from a centre tap transformer where the C.T. is neutral and unused in this case.
i.e. for N.A. just the the L1 L2 is used.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.