AIC verification at every bus, automatically
Available fault current changes at every point in your system. Equipment AIC ratings need to meet or exceed it at every point. ekx calculates the fault current and checks the rating — everywhere, automatically.
What you get
Available fault current calculated at every bus in the system from the impedance model.
Equipment AIC/interrupting ratings compared against available fault current automatically.
Any device with an AIC rating below the available fault current is flagged immediately.
Change a utility available or transformer impedance — AIC checks update throughout the system.
Equipment interrupting rating verification per NEC 110.9 requirements.
AIC verification results included in short circuit study reports.
NEC 110.9 compliance built into the model
NEC 110.9 requires equipment to be rated for the available fault current. ekx calculates the fault current and checks the rating at every point in your system — no manual verification needed.
- Available fault current calculated from the system impedance model
- Every device rating checked against local available fault current
- Underrated equipment flagged visually on the one-line diagram
- Results included in exported short circuit study reports
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Free tier includes 1 project with up to 2 buses. Paid plans start at $27/month for consultants and $149/month for unlimited access.
View All PlansFrequently asked questions
Per NEC 110.9, equipment must have an interrupting rating sufficient for the available fault current. AIC verification means checking that every device's rating meets or exceeds the calculated available fault current at its location.
Yes. Every overcurrent protection device (breaker, fuse) in the model has its interrupting rating checked against the available fault current at its bus.
ekx flags the device on the one-line diagram. You can then uprate the device, add current-limiting devices upstream, or adjust the system design.
ekx uses ANSI/IEC methods. Accuracy depends on input data quality — utility available, transformer impedances, and cable impedances. Results should be verified by the engineer of record.
AIC verification at every point in your system.
NEC 110.9 compliance. Automatic. Continuous.
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