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. 

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.

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.

More on Codes & Standards

 
Branch Circuits And AFCIs, 70E's GFCI Requirements And More

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.
 Multiwire branch circuits and outlet-type AFCIs



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General Installation Requirements, Part XIV

Article 110 in the National Electrical Code (NEC) contains requirements that cover a wide variety of topics.


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Dry-type cast-resin transformer
Changes That Matter: Transformers

There are many types of transformers with just as many different uses.


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Type NM Cable, Ceiling Wires for Support And More

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.
 Type NM cable in raceways 
in wet locations



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Pass The Source: The Important Aspects of Transfer Switches


Transfer switches are the unsung and often neglected heroes of emergency, legally required standby and optional standby systems.


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General Installation Requirements, Part XIII

Most articles in the National Electrical Code (NEC) cover specific topics such as branch circuits, overcurrent protection, grounding and bonding, boxes, rigid metal conduit, motors, healthcare facilities, swimming pools and emergency systems.


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Surge protection

New Rules: NEC Additions and Emergency Systems


Adoption and use of the 2014 National Electrical Code (NEC) is underway in many areas of the country. Adoption processes and timelines can vary between states and jurisdictions. With the 2014 NEC, a few additional requirements apply to emergency systems.


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