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. 

Available short-circuit current requirements were either added or changed in a number of locations in the 2017 National Electrical Code (NEC).

The National Electrical Code (NEC) is full of rules and regulations that are intended to make electricity use safe. Consider the rules for sizing conductors and overcurrent protection.

Each new edition of the National Electrical Code (NEC) brings change typically driven by the desire for electrical safety improvements for people and property. The Code provides the minimum requirements for safe electrical installations.

Every three years, the National Electrical Code (NEC) is updated to reflect the newest installation practices utilized by the electrical industry, bringing about hundreds of revisions and new rules to the code.After a successful webinar series in the fall of 2016, we're revisiting the topic in a sin

More on Codes & Standards

 
Grounding Connections

The basis of grounding and bonding starts at the connection of a bonding jumper or an equipment-grounding conductor to a box, an enclosure or other electrical equipment and ends at the point of connection to the service-grounded conductor in a grounded system or at the service-equipment enclosure fo


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Box Fill Calculations, Part III

Article 314: Boxes, Conduit Bodies, Fittings and Manholes 314.16(A) Box Volume Calculations Article 314 of the National Electrical Code covers the installation and use of all boxes and conduit bodies used as outlet, device, junction or pull boxes depending on their use.


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Box Fill Calculations, Part II

Article 314: Boxes, Conduit Bodies, Fittings and Manholes


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Box Fill Calculations: Article 314: Boxes; Conduit Bodies; Fittings and Manholes

Article 314 of the National Electrical Code covers the installation and use of all boxes and conduit bodies used as outlet, device, junction or pull boxes, depending on their use.


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Identification of Disconnecting Means

One of the most important NEC requirements (and yet one most often ignored) is 110.22: Identification of Disconnecting Means. It reads: “Each disconnecting means shall be legibly marked to indicate its purpose unless located and arranged so the purpose is evident.


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Certification as Separation

Photovoltaic (PV) modules convert sunlight into electrical energy that can be used to provide power for specific loads within a building in a standalone system or as a supplement to the building’s utility power supply in an integrated system.


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The Ins and Outs of AFCI Protection

The arc-fault circuit-interrupter (AFCI) has been around for three National Electrical Code (NEC) cycles and, with the advent of the new 2005 NEC, will have been present in three editions, although with various changes within each edition.


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