Power · Calculator

Voltage Drop

Estimate conductor voltage drop for copper or aluminum single- and three-phase runs.

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Assumptions

Single-phase uses a two-conductor factor; balanced three-phase uses the square-root-of-three factor.
Conductor area uses standard circular-mil values and K-factor planning constants.
Distance is one way from source to load.

Safety boundary

Planning estimate only. Qualified personnel must verify the actual equipment, conductors, protection, grounding, service, venue rules, and applicable code before energizing a system.

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