[Code of Federal Regulations] [Title 46, Volume 4] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR111.01-13] [Page 213-214] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 111_ELECTRIC SYSTEMS_GENERAL REQUIREMENTS--Table of Contents Subpart 111.01_General Sec. 111.01-13 Limitations on porcelain use. Porcelain must not be used for lamp sockets, switches, receptacles, fuse blocks, or other electric equipment where the item is solidly mounted by [[Page 214]] machine screws or their equivalent, unless the porcelain piece is resiliently mounted.