[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: 46CFR111.105-19] [Page 246] 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 111.105_Hazardous Locations Sec. 111.105-19 Switches. A switch that is explosionproof or flameproof, or that controls any explosionproof or flameproof equipment, under Sec. 111.105-19 must have a pole for each ungrounded conductor. [CGD 94-108, 61 FR 28284, June 4, 1996]