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Three-phase 120/208 or 277/480 Wye

Standard three-phase installation measuring power coming from a power utility (grid). The color coding shows 120/208V but applies to 277/480V as well. This diagram is for a Wye system with a neutral. Refer to delta diagrams for systems without neutral.

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Registers

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Notes

  • Three-phase installations are set up the same as split-phase systems, except that a third voltage-tap (L3) and a third Grid CT is required to measure power flow on phase 3.
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