Subpart B—Construction and Design Requirements

Sections

• 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.