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    durban1's Avatar
    durban1 Posts: 3, Reputation: 1
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    #1

    Apr 17, 2012, 04:27 AM
    3 phase transformer markings
    Can you point me to a chart with various commercial (3 phase) transformer configurations and the colors the wires should be marked with?
    paraclete's Avatar
    paraclete Posts: 2,706, Reputation: 173
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    #2

    Apr 17, 2012, 06:01 AM
    Wires are often marked red, blue, green but variations like brown, yellow and black are also used
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #3

    Apr 17, 2012, 06:05 AM
    Best place to find wiring diagrams is a manufacturers website or catalog, such as:

    Acme Electric

    Color code will be according to the electrical standard, such as NEC in USA, that covers your area.
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