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. 

Temporary power use


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 codefaqs@gmail.com. Answers are based on the 2017 NEC.
 Temporary power use


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.

More on Codes & Standards

 
Baseboard Heater Disconnect, Swimming Pool Bonding and More

Article 110—Requirements for Electrical Installations; Article 230—Services; Article 250—Grounding and Bonding; Article 517—Health Care Facilities; Article 680—Swimming Pools, Fountains, and Similar Installations; Article 700—Emergency Systems; The 2006 edition of the Guide Information for Electrica


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NFPA Moves to Streamline National Electrical Code Process

The National Fire Protection Association (NFPA) has revised its procedures to streamline approval of the National Electrical Code (NEC) at the association’s annual meeting, scheduled for June 4–7, 2007, in Boston.


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NFPA Moves to Streamline National Electrical Code Process

The National Fire Protection Association (NFPA) has revised its procedures to streamline approval of the National Electrical Code (NEC) at the association’s annual meeting, scheduled for June 4–7, 2007, in Boston.


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NECA Electrical Symbols Standard Now CAD-Compatible

"NECA 100-2006, Standard for Symbols for Electrical Construction Drawings” has been revised and updated. This ANSI-approved standard describes graphic symbols used to represent electrical wiring and equipment on construction drawings.


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At the Service Entrance

There are some issues involving installations in the National Electrical Code (NEC) that regularly generate considerable misunderstanding for installers, inspectors and engineers; recently, I was giving a workshop on the changes in the 2005 NEC, and as I was covering the change in Section 230.40, Ex


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