46 CFR 111.51-4
§ 111.51-4 Short-circuit calculations for systems 1500 kilowatts or above.
United States · 46 CFR — Shipping · Status: effective
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- Citation
- 46 CFR 111.51-4, § 111.51-4 Short-circuit calculations for systems 1500 kilowatts or above, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/227086
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Full text
Short-circuit calculations must be submitted for systems with an aggregate generating capacity of 1500 kilowatts or more by utilizing one of the following methods:
(a) Exact calculations using actual impedance and reactance values of system components.
(b) Estimated calculations using IEC 61363-1:1998 for AC systems and IEC 61660-1:1997 for DC systems (both incorporated by reference; see § 110.10-1 of this subchapter).
(c) The estimated calculations using a commercially established analysis procedure for utility or industrial applications.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.