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. 

For years, Article 516 of the National Electrical Code (NEC)— covering spray applications, dipping and coating processes using flammable liquids, combustible liquids and combustible powders—did not seem to change much, if at all.

National Electrical Code (NEC) sections 90.5(A) and (B) explain how to recognize mandatory rules and permissive rules. In accordance with 90.5(A), mandatory rules identify actions that are specifically required or are specifically prohibited.

Life is full of surprises, and so is the 2018 edition of NFPA 70E. After years of requiring specific information on arc flash equipment labels, as listed in 130.5(H1) through (H3), the 2018 edition has introduced Exception No.




The North American Electrical Safety System is made up of four vital components, and they all must be applied together for the system to function successfully.

More on Codes & Standards

 
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?


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GFCI Protection, Conductors and More

Article 210                Branch Circuits Article 240                Overcurrent Protection


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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.


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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.


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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.    


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Evolution of AFCIs and the <i>NEC</i>

ARC-FAULT CIRCUIT INTERRUPTERS (AFCIs) first made their appearance in the National Electrical Code (NEC) in 1999, with a mandatory effective date of Jan. 1, 2002. Research—conducted by Underwriters Laboratories Inc. (UL) for the U.S.


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