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277V Step down XFMR

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    277V Step down XFMR

    Hello all,
    Any help on this would be appreciated.
    If I put a 277V step down XFMR to 120V to feed some 120V fixtures (lightolier #7997) on the same circuit with 277V fixtures; will this work with two different voltages feeding back on the same neutral?
    I found this transformer (see attached) that looks like will accomplish this, but all of my colleagues tell me it won't work due to the neutrals.
    Any thoughts?

    Thanks,
    Cliff
    Attached Files

    #2
    It appears you have a buck-boost autotransformer. The autotransformer will need an input fuse not greater than 1.8A per 450.4(A)Exc. Can't tell if its supplied with the transformer from the cuts.

    But I don't see any reason that it wouldn't work together with other fixtures on the same 277V branch circuit.

    Comment


      #3
      That's a standard autotransformer setup. It will work.
      Bob Wilson

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