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. 

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.
 Battery locations


One of the changes in the 2014 edition of the National Electrical Code (NEC) was a new section in Article 110 pertaining to lockable disconnecting means. This is significant because a number of sections throughout the Code contain requirements for disconnecting means.

my april 2015 column, “moving forward,” provided an introduction to a number of public inputs for the 2017 National Electrical Code (NEC). These inputs were submitted to Code-making panel (CMP) 3, and they addressed power over Ethernet (PoE) cables.

Does the National Electrical Code (NEC) require a 480-volt (V), three-phase, 3-wire, delta-connected system to be grounded? No, it is optional. This article examines the NEC’s electrical-system grounding provision.

More on Codes & Standards

 
Branch-circuit markings

Color Coding, Self-Certification 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.
 Branch-circuit markings



READ MORE
 
Codes Working Together: NEC fault-current marking related to NFPA 70E


As Section 110.2 States, The National Electrical Code (NEC) provides installation requirements for electrical conductors and equipment that are either required or permitted to be installed. However, these conductors and equipment are only acceptable if the installation is approved.


READ MORE
 
General Installation Requirements, Part XV

The second article in the National Electrical Code (NEC), Article 100, contains definitions that are essential to the proper Code application. Article 110 contains many requirements that are essential to understanding and applying requirements located throughout the Code.


READ MORE
 
It's All About Workmanship

The National Electrical Installation Standards (NEIS) are the only American National Standards Institute-approved performance and workmanship industry standards for electrical construction.


READ MORE
 
General Installation Requirements, Part XIV

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


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

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


READ MORE
 
Approval Factors

In the construction industry, one of the important objectives of contractors and the construction team—aside from being paid for the job—is attaining National Electrical Code (NEC) compliance and final approval. In the electrical field, some key factors relate to achieving this ultimate goal.


READ MORE

Pages