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  1. dsteves

    480 or 240 3 phase for new service

    Unless your intended loads are entirely 120/208V, you have no equipment capable of being converted to 277/480V, and your expected total demand is so low that you can't justify $1500 for a 480/208 D-Y transformer, the logical choice is 480V. If by "new service" you mean that you have an...

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