[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: 46CFR112.01-20] [Page 253] TITLE 46_SHIPPING (This book contains parts 90 to 139) CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 112_EMERGENCY LIGHTING AND POWER SYSTEMS--Table of Contents Subpart 112.01_Definitions of Emergency Lighting and Power Systems Sec. 112.01-20 Final emergency power source. A final emergency power source is one that functions after the temporary emergency power source is disconnected.