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

 
Settling Disagreements

Recently, an inspector and contractor called me concerning a 277/480-volt feeder circuit that was designed to comply with the 2008 National Electrical Code (NEC) and supplied a building from the service equipment located in a substation switchboard room.


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Disconnects for Branch Circuits, Deep Fryers and More

Article 100—Definitions; Article 210—Branch Circuits; Article 250—Grounding and Bonding; Article 334—Nonmetallic-Sheathed Cable: Types NM, NMC, NMS; Article 422—Appliances; Article 680—Swimming Pools, Fountains, and Similar Installations; The 2007 Guide Information for Electrical Equipment Directory


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Adopting the NEC

As the 2008 edition of the National Electrical Code (NEC) nears adoption by jurisdictions across the country and beyond, there are rising concerns about changes and additional new requirements.


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Residential Wiring

Here’s the second part of a series reviewing the most popular questions that have appeared in NECA’s online Code Question of the Day and have generated the most comments from the subscribers.


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Significant Changes for the NEC 2008

There were 3,688 proposals for changes to the National Electrical Code (NEC) and 2,349 comments processed by the National Fire Protection Association (NFPA) staff at NFPA headquarters in Quincy, Mass. The following is part five in a series of significant changes for the 2008 NEC.


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AFCI Basics

Arc-Fault Circuit Interrupter (AFCI) protection has been a requirement since the 1999 National Electrical Code (NEC), starting as protection for receptacles in bedrooms and then progressing to protection of all outlets in bedrooms with changes in later Code cycles.


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