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. 

Working the day-to-day, it's sometimes easy to forget that the codes and standards for the electrical industry are living documents that change regularly to accommodate current technologies and trends as well as to better achieve their respective goals.

U.S. Department of Energy (DOE) building energy codes were put into effect in the 1970s. Between 1992 and 2012, they have saved homeowners an estimated $15.6 billion.

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 2017 NEC.
 Dead front?


Available short-circuit current requirements were either added or changed in a number of locations in the 2017 National Electrical Code (NEC).

More on Codes & Standards

 
Knowledge Beats Experience

Recently, I received a call from an electrician friend who wanted to know how to determine the difference between a raceway, nipple and sleeve, and this individual has been an electrician for 20-plus years.


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AFCI Circuit Breaker, UF Cable Temperature Rating and More

Article 210—Branch Circuits; Article 240—Overcurrent Protection; Article 250—Grounding and Bonding; Article 334—Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS; Article 340—Underground Feeder and Branch-Circuit Cable: Type UF; Article 406—Receptacles, Cord Connectors, and Attachment Plugs (Caps);


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Standards Understandably

Luckily for contractors, inspectors, specifiers and engineers alike, the National Electrical Code (NEC) is quite clear and concise when it comes to workmanship. Take, for instance, the “neat and workmanlike manner” requirement in 110.12 ... OK, that was a bad example.


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OCP for Class 2 and 3 Circuits

The overcurrent protection (OCP) for Class 2 and 3 circuits is inherent because it is equipped in their power supply. Separate OCP when used for these circuits only applies to the supply side of the power source.


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Swimming Pools, Electric Ranges and More

Article 250—Grounding and Bonding; Article 517—Health Care Facilities; Article 680—Swimming Pools, Fountains, and Similar Installations; Article 700—Emergency Systems; Article 702—Optional Standby Systems; Various parts of the 2006 edition of Guide Information for Electrical Equipment (White Book) p


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Isolated Ground Receptacles

Article 517 in the National Electrical Code (NEC) applies to electrical construction and installation criteria in healthcare facilities. Part II of Article 517 provides the requirements for wiring and protection in healthcare facilities and is applicable to all patient care areas.


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