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Every value comes from your equipment data. The engine never substitutes a number you did not see. · Don't know these numbers?

Assessment inputs

Electrical system and protective device

Values are validated again on the server and stored with the engine version.

System voltage (V)Line-to-line. The calculated method covers 208 V–15 kV (MV window 0.2–65 kA); outside the window the NFPA 70E table applies and says so.Available fault current (kA)Bolted 3-phase, symmetrical rms. 0.5–106 kA for the calculated method.

Electrode configurationGroundingRecorded for the label; it does not change IEEE 1584-2018 values.

Equipment class (used by the table method)

Clearing time at Iarc (ms)Total clearing time of the upstream device at the arcing current, from your TCC or trip unit. This tool stops rather than shortening values above 2,000 ms.Clearing time at Iarc_min (ms)Same device, read at the reduced arcing current — often slower, and often the worst case.

Equipment ID for the label (optional, ≤ 40 chars)

The Iarc clearing time comes from my protective-device data (TCC or trip unit).The Iarc_min clearing time comes from my protective-device data.

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