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Motor Full-Load Current Calculator

Estimate FLA from HP, efficiency and PF, cross-checked against the NEC Table 430.250 dataset. 4 inputs, 5 outputs with grouped results.

Inputs

Nameplate

Standard HP from NEC Table 430.250; table FLA is looked up exactly.

Line-to-line volts.

Performance

Nameplate efficiency.

Typical 0.8-0.9 at full load.

Result

Estimate vs table
-1.8 A
Estimated full-load current
12.2 A
NEC 430.250 table FLA
14.0 A
Input kVA
9.75 kVA
Shaft power
7.46 kW
Screening calculation only. Verify against NEC articles cited on the page and the equipment nameplate; the authority having jurisdiction governs.

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Workspace

Keep the assumptions with the result.

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