Codes & Standards


Essential to the work of the electrical contractor is knowledge of the National Electrical Code, the National Electrical Installation Standards and additional standards and codes administered by the National Fire Protection Association, the Occupational Safety and Health Administration and others. Here is a list of all our articles on codes and standards listed chronologically by issue date. 

Jim Dollard has an extensive background in codes and standards. If you have a query about the National Electrical Code (NEC), Jim will help you solve it. Questions can be sent to Answers are based on the 2014 NEC.
 Receptacles and EGC connections

The 2017 National Electrical Code (NEC) will feature the new Article 691, which covers nonutility company, large-scale photovoltaic (PV) electric supply stations with generating capacities of at least 5,000 kilowatts (kW).

One way to help safeguard people from hazards arising from electricity use is to ensure there is sufficient working space in front of and around electrical equipment.

This article is part 2 in a series that examines some of the more significant revisions and new requirements in the 2017 National Electrical Code (NEC). This piece reviews some significant changes in Articles 100 and 110.
 Article 100­—Definitions

More on Codes & Standards

Power Supply for a Fire Pump, Stranded Conductors on Receptacles, Kitchen Light Switches, and More

CODE CITATIONS Article 110—Requirements for Electrical Installations Article 210—Branch Circuits Article 230—Services Article 250—Grounding Article 408—Switchboards and Panelboards Article 430—Motors, Motor Circuits, and Controllers Article 695—Fire Pumps

2002 NEC Adds High-voltage Requirements

The electrical industry is rapidly changing. Utility companies are selling high-voltage equipment, including transformers and distribution equipment, to end-users as part of divestiture agreements.

Article 210 - Branch Circuits

Please see January issue of Electrical Contracor for referenced figures. 210.8(A) Dwelling Units

Electrical Installation Requirements, Overcurrent Protection, Lighting Fixtures, and More

CODE CITATIONS Article 110—Requirements for Electrical Installations Article 230—Services Article 240—Overcurrent Protection Article 310—Conductors for General Wiring Article 410—Lighting Fixtures, Lampholders, Lamps, and Receptacles Article 424—Fixed Electric Space-Heating Equipment

What Does Article 300 Cover?

This article Is based on the newly issued 2002 National Electrical Code (NEC). The NEC style has been changed for the 2002 edition. It may take awhile for those who are familiar with previous issues of the Code to become accustomed to using it, but this new style should make it much easier to use.

Testing and Maintaining Life Safety Systems

Most electrical contracting firms are involved in installing life safety systems for new building construction and the renovation and expansion of existing buildings, but not in the ongoing system inspection, testing, maintenance, and upgrade.