Subpart B—Construction and Design Requirements
Sections
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18.20
§ 18.20 Quality of material, workmanship, and design. -
18.21
§ 18.21 Machines equipped with powered dust collectors. -
18.22
§ 18.22 Boring-type machines equipped for auxiliary face ventilation. -
18.23
§ 18.23 Limitation of external surface temperatures. -
18.24
§ 18.24 Electrical clearances. -
18.25
§ 18.25 Combustible gases from insulating material. -
18.26
§ 18.26 Static electricity. -
18.27
§ 18.27 Gaskets. -
18.28
§ 18.28 Devices for pressure relief, ventilation, or drainage. -
18.29
§ 18.29 Access openings and covers, including unused lead-entrance holes. -
18.30
§ 18.30 Windows and lenses. -
18.31
§ 18.31 Enclosures—joints and fastenings. -
18.32
§ 18.32 Fastenings—additional requirements. -
18.33
§ 18.33 Finish of surface joints. -
18.34
§ 18.34 Motors. -
18.35
§ 18.35 Portable (trailing) cables and cords. -
18.36
§ 18.36 Cables between machine components. -
18.37
§ 18.37 Lead entrances. -
18.38
§ 18.38 Leads through common walls. -
18.39
§ 18.39 Hose conduit. -
18.40
§ 18.40 Cable clamps and grips. -
18.41
§ 18.41 Plug and receptacle-type connectors. -
18.42
§ 18.42 Explosion-proof distribution boxes. -
18.43
§ 18.43 Explosion-proof splice boxes. -
18.44
§ 18.44 Non-intrinsically safe battery-powered equipment. -
18.45
§ 18.45 Cable reels. -
18.46
§ 18.46 Headlights. -
18.47
§ 18.47 Voltage limitation. -
18.48
§ 18.48 Circuit-interrupting devices. -
18.49
§ 18.49 Connection boxes on machines. -
18.50
§ 18.50 Protection against external arcs and sparks. -
18.51
§ 18.51 Electrical protection of circuits and equipment. -
18.52
§ 18.52 Renewal of fuses. -
18.53
§ 18.53 High-voltage longwall mining systems. -
18.54
§ 18.54 High-voltage continuous mining machines.