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. Send questions to Answers are based on the 2017 NEC.
 NFPA 99 and Article 700

Terminology is the vocabulary of technical terms and usages appropriate to a particular trade, science or art. Does it matter what we call something in the National Electrical Code (NEC)?

Article 110 in the National Electrical Code (NEC), 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. It contains five parts.

Ground-fault protection of equipment (GFPE) provides protection from devastating arcing events and destructive arcing burn-downs. National Electrical Code (NEC) sections 215.10, 230.95, 240.13 and 517.17 provide GFPE requirements, and Article 100 defines it.

More on Codes & Standards

Can You Ever Suspend Wiring from Trees?

A few revisions to the 1999 National Electrical Code which are of interest and worthy of comment:

Data centers

Fiber Optic Update 2014

Before I write this column each year, I contemplate the events of the past year and try to determine the direction of the market. The previous year seems to have been one of new challengers to traditional technology.

A Good Year For Government Outreach

The changing of the calendar fills some people with regret for missed opportunities, unfulfilled promises and unresolved challenges. But, for those with a more optimistic and practical nature, each January brings new opportunities to take well-thought-out action and get things right.

Editors' Pick
Estimating art 101

I Color For A Living

Many of us bring our work home. One weekend, my young daughter was watching me do a takeoff; I was counting, measuring and highlighting the plans as I went. She got very excited and, with big, round eyes, asked me, “Daddy, is that what you do at work?