Here is where the user of NFPA 70 will find the general requirements that apply to all electrical installations including but not limited to the following:
- Examination and approval of conductors and equipment
- Installation and use of conductors and equipment
- Access to electrical equipment
- Spaces about electrical equipment
- Enclosures intended for personnel entry
There are 5 parts within this Article including the following:
- Part II 1000 Volts, Nominal, or Less
- Part IV Tunnel Installations
- Part V Manholes and Other Electrical Enclosures Intended for Personnel EntryAs highlighted in 90.3, Chapter 1 applies generally.
Part I
General
110.1 Scope
110.2 Approval
110.4 Voltages
110.5 Conductors
110.6 Conductor Sizes
110.7 Wiring Integrity
110.8 Wiring Methods
110.9 Interrupting Rating
110.10 Circuit Impedance, Short-Circuit Current Ratings, and Other Characteristics.
110.11 Deteriorating Agents
110.13 Mounting and Cooling of Equipment
110.14 Electrical Connections
110.15 High-Leg Marking
110.18 Arcing Parts
110.19 Light and Power from Railway Conductors
110.23 Current Transformers
110.24 Available Fault Current
Part II
1000 Volts, Nominal, or Less
110.27 Guarding of Live Parts
110.28 Enclosure Types
Part III
Over 1000 Volts
110.30 General
110.31 Enclosure for Electrical Installations
110.32 Work Space About Equipment
110.33
110.34 Work Space and Guarding
110.36 Circuit Conductors
110.40 Temperature Limitations at Terminations
110.41 Inspections and Tests
Part IV
Tunnel Installation Over 1000 Volts, Nominal
110.51 General
110.52 Overcurrent Protection
110.53 Conductors
110.54
110.55
110.56
110.57
110.58
110.59
Part V
Manholes and Other Electrical Enclosures Intended for Personnel Entry