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 2017 NEC.
 OCPD for a fire pump


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.

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.

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).
 600.2 Definitions and 600.34 
PV Powered Signs


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General Installation Requirements, Part XXIII

The stated purpose of the National Electrical Code (NEC) is the practical safeguarding of people and property from hazards arising from electricity use. One way to help do this is to ensure there is enough room around electrical equipment.



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2017 NEC: Conductors, Switches, Receptacles—Significant Changes in the 2017 NEC, Part 5


This article reviews changes in Chapter 3, Wiring and Methods and Materials, and Chapter 4, Equipment for General Use, in the 2017 edition of the National Electrical Code (NEC).
 336.10 Uses Permitted



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Pool Lifts, Suspended Ceiling Supports 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.
 Panelboards in cabinets?



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Basic Training

Electrical overcurrent protective system Coordination can be complex and daunting. It is best approached with knowledge of the basics and proper system design.


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General Installation Requirements, Part XXII

Without very specific National Electrical code (NEC) rules for determining the right size conductor and the correct size overcurrent protective device, a conductor could overheat and even start a fire.


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2017 NEC: Grounding, Bonding And Wiring—Significant Changes in the 2017 NEC, Part 4


This article is part 4 in a series that reviews some of the more significant revisions and new requirements in the next National Electrical Code (NEC).


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General Installation Requirements, Part XXI

Article 110 OF the National Electrical Code (NEC) 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.


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