[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: 46CFR112.20-1] [Page 257] 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 112.20_Emergency Systems Having a Temporary and a Final Emergency Power Source Sec. 112.20-1 General. This subpart contains requirements applicable to emergency power installations having both a temporary and a final emergency power source.