GroundRules
46 CFR 111.51-2: -2 Short-circuit calculations.
Where this section sits in the code
- Title 46—Shipping
- CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
- SUBCHAPTER J—ELECTRICAL ENGINEERING
- PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
- Subpart 111.51—Calculation of Short-Circuit Currents and Coordination of Overcurrent Protective Devices
(a) The available short-circuit current must be computed—
(1) From the aggregate contribution of all generators that can simultaneously operate in parallel;
(2) From the largest probable motor load; and
(3) With a three-phase fault on the load terminals of the protective device.
(b) The calculated currents must be used to select suitably rated equipment and to allow the selection and setting of protective devices.
Collected 2026-08-27T02:26:22Z. Source file · JSON