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.
 Small generators can’t handle the load


I recently was asked to review a series of emails from a colleague about equipment requirements for ready access or, as defined in Article 100 and used within text in the National Electrical Code (NEC), as “readily accessible.” This phrase is used to describe the location of circuit breakers, for ex

What does the National Electrical Code (NEC) require when installing isolated/insulated grounding-type receptacles and auxiliary grounding electrodes?

Most of Article 240 in the National Electrical Code (NEC) provides general requirements for overcurrent protection and overcurrent protective devices not more than 1,000 volts (V), nominal. As a general rule, the overcurrent device rating shall not exceed the ampacity of a conductor.

More on Codes & Standards

 
Pool Codes Get Rewrite

Article 680 covering swimming pools, fountains and similar installations has been totally rewritten for the 2002 National Electrical Code (NEC). Over the past NEC cycles, this article has grown substantially in size and a major rewrite was needed to make it easier to understand and use.

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Article 210: Branch Circuits

210.52(C)(5) Receptacle Outlet Location Provisions stipulating the placement of receptacle outlets are covered in 210.52 through 210.63. Requirements for placing receptacles in dwelling units are located in 210.52(A) through (H).

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Air Conditioner Requirements, Toggle Switches and More

CODE CITATIONS Article 90 Introduction Article 110 Requirements for Electrical Installations Article 250 Grounding Article 404 Switches Article 430 Motors, Motor Circuits and Controllers Article 440 Air Conditioning and Refrigerating Equipment Routing grounding electrode conductor Q: We have to inst

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A Change in Motor Disconnect Locations

There are many major changes in the 2002 National Electrical Code (NEC), but none will affect more installations than the change involving motor disconnect locations.

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Installing Smoke Detectors (Alarms)

Smoke detectors (alarms) are installed in single-family dwellings to provide early warning of a fire. Their installation is required by building codes in many municipalities and by many fire departments.

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Article 210 - Branch Circuits

210.52(A)(2) Wall Space Receptacle placement provisions for dwelling units are stipulated in 210.52(A) through (H). Last month’s In Focus concluded with fixed and sliding panels in exterior walls.

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Installing Smoke Detectors (Alarms)

Smoke detectors (alarms) are installed in single-family dwellings to provide early warning of a fire. Their installation is required by building codes in many municipalities and by many fire departments.

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