Electrical Contractor Magazine

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. 

In February’s column, I discussed why the Electrical Transmission & Distribution (ET&D) Partnership is an example of an Occupational Safety and Health Administration (OSHA) cooperative program that has worked out extremely well.

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 codefaqs@gmail.com. Answers are based on the 2014 NEC.
 Abandoned cable in ceiling


Transformer secondary conductor rules are similar to the rules for tap conductors. Rules for transformer secondary conductors and tap conductors are even in the same section of the National Electrical Code (NEC).

Available fault current, short-circuit current rating, arc energy, arc flash hazards, and incident energy are closely related in both the National Electrical Code (NEC) and NFPA 70E, Standard for Electrical Safety in the Workplace.

Electrical Contractor Magazine

More on Codes & Standards

 
Electrical Installation Requirements, Overcurrent Protection, Lighting Fixtures, and More
by Staff |

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

READ MORE
 
What Does Article 300 Cover?
by Staff |

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.

READ MORE
 
Electrical Installation Requirements, Overcurrent Protection, Grounding, and Transformers and Their Vaults
by Staff |

CODE CITATIONS Article 110—Requirements for Electrical Installations Article 240—Overcurrent Protection Article 250—Grounding Article 450—Transformers and Transformer Vaults Working space around electrical equipment

READ MORE
 
Wiring in Ducts, Plenums, and Other Air-handling Spaces
by Staff |

Navigating the requirements in the National Electrical Code (NEC) for ducts, plenums, and other air-handling spaces can be difficult.

READ MORE
 
Testing and Maintaining Life Safety Systems
by Staff |

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.

READ MORE
 
The Code In Focus--Article 210 - Branch Circuits
by Staff |

210-5 Identification for Branch Circuits

READ MORE
 
Code Changes Require Technical Substantiation
by Staff |

Sometimes a code change is made with no supporting comment—no technical support —other than “we have been doing it this way for years and have had no trouble.” Section 4-3.3(d) of the NFPA Requirements Governing Committee Projects requires that substantiation be provided for each proposal.

READ MORE

Pages