Skip to content
Electrician1001

Fault Current Calculator

Infinite-bus available fault current at transformer secondaries.

Inputs

Inputs and assumptions

Nameplate kVA.

Line to line volts.

Nameplate %Z.

Result

Available fault current
Waiting for calculation.
In kilo-amps
Waiting for calculation.
Screening tool. Verify against the NEC as adopted locally, the AHJ, nameplate data, and metered conditions before acting.

Related calculators

Workspace

Keep the assumptions with the result.

Save this calculation to return to the inputs, result, and report from your private workspace.

Sign in or create an account to save this calculation.