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IEC LV utilization (1φ / 3φ) vs ANSI 120/208 V or 277/480 V

230 / 400 Vobserved

Value kindobserved — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range.
As ofstandard
SourceIEC 60038 / IEC 60364; ANSI C84.1 · IEC 60038 scope and revision summary; Table 1 includes 230 V and 230/400 V standard values
Reviewchecking…review by 2026-12-05 · slow cadence
Recorded changeslast 2026-06-29
Claim idiec-lv-utilization-1-3-vs-ansi-120-208-v-or-277

Where the guide uses it

← Full numbers register — every date-stamped figure in the guide, with revision history.