[Code of Federal Regulations] [Title 46, Volume 4] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR111.52-5] [Page 230] TITLE 46_SHIPPING (This book contains parts 90 to 139) CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 111_ELECTRIC SYSTEMS_GENERAL REQUIREMENTS--Table of Contents Subpart 111.52_Calculation of Short-Circuit Currents Sec. 111.52-5 Systems 1500 kilowatts or above. 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 the Naval Sea Systems Command Design Data Sheet DDS 300-2. (c) Estimated calculations using IEC 363. (d) The estimated calculations using a commercially established analysis procedure for utility or industrial applications. [CGD 94-108, 61 FR 28279, June 4, 1996]