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. Send questions to codefaqs@gmail.com. Answers are based on the 2017 NEC.
 Kitchen GFCIs


A friend recently sent me an email with this picture (right) of a manual fire alarm pull station mounted on the side of an electrical panelboard. My friend was inspecting the fire alarm system and was accompanied by the electrician who had installed both the fire alarm and electrical systems.

All of the chapters in the National Electrical Code (NEC) contain tables, but not all of the chapters contain articles. Chapter 9 does not contain any articles; this last chapter only contains tables. The first of two articles in Chapter 1 is Article 100, Definitions.

Reducing differences of potential between conductive equipment or other objects and ground (earth) helps minimize shock hazards in normal circuit operation.

More on Codes & Standards

 
2017 NEC: Introducing The New Code—Significant Changes in the 2017 NEC
, Part 1

Every three years, the National Electrical Code (NEC) is revised and often expanded. As the 2017 NEC development cycle comes to a close, the final stages of the process unfold.


READ MORE
 
Voltage Drop: Sizing Equipment Grounding Conductors

The National Electrical Code (NEC) contains the minimum requirements for a safe installation. One must do at least that much when installing electrical equipment and systems. This means understanding how to size electrical conductors of circuits, including the equipment grounding conductors (EGCs).


READ MORE
 
Keeping Your Distance, Termination Issues 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.
 Communications cable and 300.4(E)



READ MORE
 
General Installation Requirements, Part XVIII

Understanding the third article of the National Electrical Code (NEC), Article 110, Requirements for Electrical Installations, is essential to having a Code-compliant installation of the electrical system. 



READ MORE
 
The Ins And Outs Of Safety

In March, I attended a Central Arizona Chapter International Association of Electrical Inspectors (IAEI) meeting. A discussion ensued about the growing number of improperly installed and uncertified light-emitting diode (LED) retrofit lighting kits.


READ MORE
 
Slash-rated breakers on 480V ungrounded delta?

Slash-Rated Breakers, Trade Show Dilemma 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.
 Slash-rated breakers on 480V ungrounded delta?



READ MORE
 
General Installation Requirements, Part XVII

Article 110 in the National Electrical Code (NEC) contains general requirements for electrical installations. Some of the topics covered include examination and approval, installation and use, and access to and spaces about electrical conductors and equipment.



READ MORE

Pages

X