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. 

GFCI in locker rooms


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.
 GFCI in locker rooms


Those of us who use the National Electrical Code (NEC) on a regular basis and are familiar with the words as well as the intent of the text can often overlook the most obvious interpretations by the rest of the electrical industry.


National Electrical Code (NEC) Article 110 covers general requirements for the examination and approval, installation and use, access to and spaces about electrical conductors and equipment; enclosures intended for personnel entry; and tunnel installations.

Grounding methods and requirements for systems operating at more than 1,000 volts (V), such as 5- and 15-kilovolt (kV) systems, differ slightly from those for systems of 1,000V or less. Systems in these voltage ranges are commonly referred to as medium-voltage systems.

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Gather Around: Meeting Room Outlet Requirements


Anyone who has attended a conference in a hotel or other meeting space knows there can be a lack of receptacles to provide power for portable equipment. Sometimes, extension cords or relocatable power taps are plugged into wall receptacles and daisy-chained together to provide power to tables.


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2017 NEC: Special Conditions And Communication Systems—Significant Changes in the 2017 NEC, Part 10


This is the final part in a series that reviews some of the more significant revisions and new requirements included in the 2017 National Electrical Code (NEC). This article looks at more rule changes for special equipment covered in NEC chapters 7 and 8.


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2017 NEC: Special Equipment Rules—Significant Changes in the 2017 NEC, Part 9


This article provides a review of more significant changes to the rules for special equipment covered in Chapter 6, Special Equipment, of the 2017 National Electrical Code (NEC).
 Visit www.ecmag.com/2017-NEC-significant-changes for this full series.
 600.2 Definitions and 600.34 
PV Powered Signs



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Overcurrent Protection, Kitchen Countertops 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 2017 NEC.
 OCPD for a fire pump



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Critical Changes: Emergency and Standby Systems


Some regular National Electrical Code (NEC) users may not have noticed major changes in the 2014 and 2017 editions dealing with the emergency and standby power requirements in Article 700, Emergency Systems; Article 701, Legally Required Standby Systems; and Article 702, Optional Standby Systems.


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General Installation Requirements, Part XXVII

As stated in 90.1(A) of the National Electrical Code (NEC), the purpose of the Code is the practical safeguarding of people and property from hazards arising from the use of electricity.


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Auxiliary grounding electrodes

Homemade Labels, Accessing Overhead Disconnects 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 2017 NEC.
 Auxiliary grounding electrodes



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