§111.51-2. Short-circuit calculations.
46 C.F.R. § 111.51-2
The available short-circuit current must be computed—
From the aggregate contribution of all generators that can simultaneously operate in parallel;
From the largest probable motor load; and
With a three-phase fault on the load terminals of the protective device.
The calculated currents must be used to select suitably rated equipment and to allow the selection and setting of protective devices.
Notes, amendments, and revision history
Source
Source: USCG-2020-0075, 88 FR 16362, Mar. 16, 2023, unless otherwise noted.
Authority
Authority: 46 U.S.C. 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.2. Section 111.05-20 and Subpart 111.106 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905.
Source
Source: CGD 74-125A, 47 FR 15236, Apr. 8, 1982, unless otherwise noted.