46 C.F.R. § 111.105-27 Belt drives.
Title 46 - Shipping
Each belt drive in a hazardous location must have: (a) A conductive belt; and (b) Pulleys, shafts, and driving equipment grounded to meet NFPA No. 77.
Title 46: Shipping
PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
Subpart 111.105—Hazardous Locations
§ 111.105-27 Belt drives.

