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. 

The decision to install and operate an ungrounded system is typically a combined effort that includes a design or engineering team, the owner, the operators and sometimes the authority having jurisdiction.

Slash-rated breakers on 480V ungrounded delta?


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.
 Slash-rated breakers on 480V ungrounded delta?


Article 110 in the National Electrical Code (NEC) contains general requirements for electrical installations. Some of the topics covered include examination and approval, installation and use, and access to and spaces about electrical conductors and equipment.


A caller recently asked if all 125-volt (V), 15- and 20-ampere (A) receptacles in a commercial kitchen were required to be ground-fault circuit interrupter (GFCI) protected, even where part of a listed assembly.

More on Codes & Standards

 
Transformer Protection, Disconnecting Means and More

Article 100                Definitions Article 210                Branch Circuits Article 240                Overcurrent Protection Article 250                Grounding and Bonding Article 310                Conductors for General Wiring Article 404                Switches Article 410              


READ MORE
 
GFCI Protection, Conductors and More

Article 210                Branch Circuits Article 240                Overcurrent Protection


READ MORE
 
Shelter from the Storm

The gray area of electrical outlet installation Several problems arise when installing an outlet box on the exterior of a building.


READ MORE
 
Avoid Acceptance Test Failures

Understand related systems and learn important cues Why do many contractors continue to avoid scheduling the fire alarm system installation inspection? Is it because they know the system might fail the acceptance test and, as such, would thereby delay occupancy?


READ MORE
 
All Shook Up

Seismic requirements for electrical installations Concern about earthquakes and their impact on buildings and facility operation is no longer limited to those regions of the United States, such as the West Coast, where seismic activity is common.


READ MORE
 
Do You Know Charlie?

 Get the wit and wisdom of NEC guru Charlie Trout delivered right to your email every day with the NEIS Code Question of the Day. Subscribe online or check out today’s question and yesterday’s answer.    


READ MORE

Pages