Contents
Preface
Foreword
1. Scope
2. Definitions
3. General Requirements and Reference Publications
3.1 General
3.2 Reference Publications
4. Construction-Boxes, Covers, Bar Hangers, and
    Fittings
4.1 General
4.2 Boxes
4.2.1 Materials
4.2.2 Dimensions
4.2 3 Knockouts of Boxes
4.2.4 Openings for Conduit and EMT
4.2.5 Closure of Openings
4.2.6 Integral Clamps or Fasteners
4.2.7 Rain-Tight Boxes (Type 3R)
4.2.8 Ceiling Fan Support Boxes
4.2.9 Bonding and Grounding
4.2.10 Box Supports and Studs
4.3 Outlet Box Covers
4.3.1 Metallic Materials
4.3.2 Nonmetallic Materials
4.3.3 Covers for Nonmetallic Boxes
4.3.4 Materials for Bell Transformers etc
4.3.5 Holes in Outlet Box Covers
4.3.6 Volume
4.4 Bar Hangers
4.4.1 Ceiling Installations
4.4.2 Wall Installation
4.5 Protection Against Corrosion (Boxes, Covers, and Bar
     Hangers)
4.6 Fittings
4.6.1 General
4.6.2 Metallic Materials
4.6.3 Nonmetallic Materials
4.6.4 Environment Considerations
4.7 Electrical Metallic Tubing and Threadless Rigid
     Conduit Fittings
4.7.1 Dimensions
4.7.2 End Stops
4.7.3 Requirements
4.8 Service Entrance Fittings
4.8.1 Requirements
4.9 Fittings and Clamps for Nonmetallic Sheath Cable
4.9.1 Requirements
4.10 Fittings and Clamps for Armoured Cable, Aluminium
     Sheathed Cable, Flexible Metal Conduit, and
     Liquid-Tight Conduit
4.10.1 General
4.10.2 Dimensions
4.10.3 Requirements
4.11 Mesh Grips
4.11.1 General
4.11.2 Materials
4.11.3 Requirements
4.12 Entrance Caps
4.12.1 Requirements
4.12.2 Nonmetallic Materials
4.13 Locknuts
4.13.1 General
4.13.2 Dimensions
4.14 Bushings and Nipples for Rigid Conduit
4.14.1 General
4.14.2 Dimensions
4.14.3 Requirements
4.15 Reducing Washers
4.15.1 General
4.16 Straps for Rigid Conduit and Electrical Metallic
     Tubing
4.16.1 General
4.16.2 Requirements
4.17 Straps and Staples for Arnoured Cable, Flexible
     Metal Conduit, and Nonmetallic Sheathed Cable
4.17.1 General
4.17.2 Dimensions
4.17.3 Requirements
4.18 Hangers for Rigid Conduit and Electrical Metallic
     Tubing
4.18.1 Requirements
4.19 Protector Plates
4.19.1 Dimensions
4.20 Armoured Cable Bushings
4.20.1 Dimensions
4.20.2 Requirements
4.21 Tray Cable and Flexible Cord Fittings
4.22 Bushings and Standoffs for Nonmetallic Sheathed
     Cables
5. Marking
5.1 General
5.2 Boxes and Raised Covers
5.3 Rain-Tight Boxes (or Suitable For Use in Wet
     Locations)
5.4 Fittings
5.5 EMT Fittings
5.6 Fittings, Dry Locations
5.7 Clamps for Cable and Conduit
5.8 Hardware Items (Staples, Hangers, Locknuts,
     Reducing Washers, Protector Plates, etc)
5.9 Insulating Bushings
5.10 Armoured Cable Bushings
5.11 Mesh Grips
5.12 Bushings and Standoffs for Nonmetallic Sheathed
     Cables
6. Tests
6.1 Strength of Fastening of Boxes
6.2 Boxes with Attached Device-Mounting Straps
6.3 Nonmetallic Box Materials
6.3.1 Flammability
6.3.2 Impact
6.3.3 Crushing
6.3.4 Ageing
6.3.5 Mould Stress Relief
6.3.6 Elevated Temperature Pullout and Distortion
6.4 Secureness of Bonding Screw in a Nonmetallic Box
6.5 Ceiling Fan Support Boxes
6.6 Volume Measurement of Boxes and Raised Covers
6.7 Knockouts
6.7.1 Strength of Knockouts
6.7.2 Flat Surface Surrounding Knockouts Near a Radius
6.7.3 Knockouts (Pryouts Including Breakouts) of Boxes
      of Nonmetallic Material
6.8 Nonmetallic Plug of Other Closure
6.9 Thickness of Protective Metallic Coating of Boxes
     and Covers
6.10 Stud and Attachment to a Box or Cover
6.11 Box Supports
6.12 Bar Hangers
6.13 Rain-Tight (or Suitable for Use in Wet Locations)
     Boxes and Fittings
6.13.1 Boxes
6.13.2 Fittings
6.14 Elastomeric Bushings and Glands, Accelerated Ageing
6.15 Fittings and Clamps for Flexible Metal Conduit,
     Armoured Cable, Aluminium Sheathed Cable
6.15.1 Resistance
6.15.2 Pullout
6.16 Clamps and Fittings for Nonmetallic Sheathed Cable
6.16.1 Pullout
6.16.2 Temperature
6.16.3 Moulded Nonmetallic Clamps and Fittings
6.17 Threadless Fittings for Electrical Metallic Tubing
     and Rigid Conduit
6.17.1 Internal Diameter
6.17.2 Resistance, Bending, and Pullout
6.17.3 Cantilever
6.17.4 Fittings with Locknuts
6.18 Submersible Fitting
6.19 Concrete-Tight Fitting
6.20 Service Entrance Cable Fitting Pullout
6.21 Nonmetallic and Insulated Metallic Bushings
6.22 Straps for Rigid Conduit and Electrical Metallic
     Tubing
6.23 Straps and Staples for Armoured Cable, Flexible
     Metal Conduit, and Nonmetallic Sheathed Cable
6.24 Hangers for Rigid Conduit and Electrical Metallic
     Tubing
6.25 Fittings for Liquid-Tight Flexible Metal or
     Nonmetallic Conduit
6.26 Armoured Cable Bushings
6.26.1 Deterioration and Flexibility
6.26.2 Low Temperature Flexibility
6.26.3 Dielectric Strength
6.27 Fittings-Screw Torque
6.28 Mesh Grips
6.28.1 Tension
6.28.2 Abrasion
6.28.3 Accelerated Ageing
6.29 Fittings for Flexible Cord
6.29.1 Strain Relief
6.29.2 Hosedown (Fittings Intended for Type 4 and 4X
       Enclosures)
6.29.3 Hosedown (Fittings Intended for Type 3 and 3S
       Enclosures)
6.29.4 Resistance to Impact at Low Temperature
6.30 Fittings for Tray Cable
6.30.1 Pull
6.30.2 Oven Conditioning
6.30.3 Weather Resistance
6.30.4 Dielectric Strength
6.30.5 Oil Immersion
6.31 Bushings and Standoffs for Nonmetallic Sheathed
     Cables
6.31.3 Oven Conditioning
6.31.2 Voltage Withstand
6.31.3 Secureness
6.32 Wire Pull Test for Angle Fitting, Conduit Body, and
     Short-Radius Conduit Body
6.33 Test on Expanded (Foam) Closed-Cell Materials
6.34 Expansion Fittings (for Rigid Metal Conduit)
6.35 Hubs
Tables
Figures
Appendices
A-Recommended Bushing Size for a Given Range of Armour
B-Test Guides
C-Marking Translations
D-Markings for Specific Conditions of Use