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Fault Current Calculator

Infinite-bus fault current with impedance picker, kA result, AIC verdict and common breaker ratings. 4 inputs, 4 outputs with grouped results.

Inputs

Source

Nameplate kVA.

Line-to-line volts.

Nameplate %Z.

Gear

Installed equipment rating.

Result

Available fault current
Waiting for calculation.
In kilo-amps
Waiting for calculation.
AIC margin
Waiting for calculation.
Gear adequate (1=yes)
Waiting for calculation.
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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