// CODE SNIPPET
250.26 Conductor to Be Grounded — Alternating-Current Systems
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For grounded ac premises wiring systems, the conductor to be grounded shall be as specified in the following:
- Single-phase, 2-wire — one conductor
- Single-phase, 3-wire — the neutral conductor
- Multiphase systems having one wire common to all phases — the neutral conductor
- Multiphase systems where one phase is grounded — that phase conductor
- Multiphase systems in which one phase is used as in (2) — the neutral conductor
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