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110.1
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.1 Scope.
- This article covers general requirements for the examination and approval, installation and use, access to and spaces about electrical conductors and equipment; enclosures intended for personnel entry; and tunnel installations.
- Informational Note: See Informative Annex J for information regarding ADA accessibility design.
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110.2
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.2 Approval.
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110.3
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.3 Examination, Identification, Installation, and Use, and Listing (Product Certification) of Equipment.
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110.4
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.4 Voltages.
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110.5
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.5 Conductors.
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110.6
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.6 Conductor Sizes.
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110.7
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.7 Wiring Integrity.
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110.8
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.8 Wiring Methods.
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110.9
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.9 Interrupting Rating.
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110.10
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.10 Circuit Impedance, Short-Circuit Current Ratings, and Other Characteristics.
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110.11
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.11 Deteriorating Agents.
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110.12
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.12 Mechanical Execution of Work.
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110.13
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.13 Mounting and Cooling of Equipment.
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110.14
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.14 Electrical Connections.
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110.15
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.15 High-Leg Marking.
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110.16
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.16 Arc-Flash Hazard Warning.
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110.18
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.18 Arcing Parts.
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110.19
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.19 Light and Power from Railway Conductors.
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110.21
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.21 Marking.
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110.22
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.22 Identification of Disconnecting Means.
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110.23
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part I. General
110.23 Current Transformers.
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110.24
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.24 Available Fault Current.
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110.25
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part I. General
- 110.25 Lockable Disconnecting Means.
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110.26
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part II. 1000 Volts, Nominal, or Less
110.26 Spaces About Electrical Equipment.
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110.27
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part II. 1000 Volts, Nominal, or Less
110.27 Guarding of Live Parts.
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110.28
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part II. 1000 Volts, Nominal, or Less
110.28 Enclosure Types.
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110.30
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part III. Over 1000 Volts, Nominal
- 110.30 General.
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110.31
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part III. Over 1000 Volts, Nominal
- 110.31 Enclosure for Electrical Installations.
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110.32
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part III. Over 1000 Volts, Nominal
- 110.32 Work Space About Equipment.
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110.33
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part III. Over 1000 Volts, Nominal
- 110.33 Entrance to Enclosures and Access to Working Space.
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110.34
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part III. Over 1000 Volts, Nominal
- 110.34 Work Space and Guarding.
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110.36
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part III. Over 1000 Volts, Nominal
- 110.36 Circuit Conductors.
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110.40
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part III. Over 1000 Volts, Nominal
- 110.40 Temperature Limitations at Terminations.
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110.41
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part III. Over 1000 Volts, Nominal
- 110.41 Inspections and Tests.
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110.51
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
Part IV. Tunnel Installations over 1000 Volts, Nominal
110.51 General.
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110.52
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part IV. Tunnel Installations over 1000 Volts, Nominal
- 110.52 Overcurrent Protection.
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110.53
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part IV. Tunnel Installations over 1000 Volts, Nominal
- 110.53 Conductors.
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110.54
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part IV. Tunnel Installations over 1000 Volts, Nominal
- 110.54 Bonding and Equipment Grounding Conductors.
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110.55
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part IV. Tunnel Installations over 1000 Volts, Nominal
- 110.55 Transformers, Switches, and Electrical Equipment.
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110.56
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part IV. Tunnel Installations over 1000 Volts, Nominal
- 110.56 Energized Parts.
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110.57
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part IV. Tunnel Installations over 1000 Volts, Nominal
- 110.57 Ventilation System Controls.
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110.58
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part IV. Tunnel Installations over 1000 Volts, Nominal
- 110.58 Disconnecting Means.
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110.59
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part IV. Tunnel Installations over 1000 Volts, Nominal
- 110.59 Enclosures.
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110.70
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.70 General.
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110.71
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.71 Strength.
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110.72
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.72 Cabling Work Space.
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110.73
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.73 Equipment Work Space.
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110.74
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.74 Conductor Installation.
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110.75
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.75 Access to Manholes.
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110.76
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.76 Access to Vaults and Tunnels.
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110.77
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.77 Ventilation.
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110.78
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.78 Guarding.
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110.79
- Article 110
- Chapter 1 — General
Article 110 - Requirements for Electrical Installations
- Part V. Manholes and Other Electrical Enclosures Intended for Personnel Entry
- 110.79 Fixed Ladders.
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