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.
 Kitchen countertop receptacle height


Many of the articles I write for ELECTRICAL CONTRACTOR originate as questions from people who read my columns or attend my workshops.

Article 210 in the National Electrical Code (NEC) covers branch circuits, with the exception of circuits that supply motor loads only. Article 430 covers these branch circuits, and Part II covers motor-circuit conductors.

A reader wrote in that an inspector had turned down one of his projects, citing the installation was in violation of National Electrical Code (NEC) 517.13(A) and (B) because Type MC cable was installed in the patient-care areas.

More on Codes & Standards

 
GFCI Requirements Expand in 2005 NEC

Ground-fault circuit interrupter (GFCI) protection for personnel or a similar protection technique has been in the National Electrical Code (NEC) since 1962 with specific reference to GFCI and its definition found in the 1968 NEC.

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Grounding Electrode Conductors in a Building

Grounding electrodes are required to be installed and connected to electrical services and to some feeders or branch circuits in separate buildings remotely located from the service.

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Box-Fill Calculations, Part VI

ARTICLE 314 C OUTLET, DEVICE, PULL AND JUNCTION BOXES; CONDUIT BODIES; FITTINGS; AND MANHOLES

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Working in the Garage

The required placement of receptacles in the wall above a kitchen countertop is uncertain where an appliance garage is present. The Code requirements are the following: “210.52 Dwelling Unit Receptacle Outlets. (C) Countertops (1) Wall Counter Spaces.

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Box-Fill Calculations, Part V

ARTICLE 314 C OUTLET, DEVICE, PULL AND JUNCTION BOXES; CONDUIT BODIES; FITTINGS; AND MANHOLES

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Box-Fill Calculations, Part IV

ARTICLE 314 C Outlet, Device, Pull and Junction Bozes, Conduit Bodies; Fittings; and Manholes 314.16(B) Box-Fill Calculations The National Electrical Code contains requirements for the numbers and sizes of conductors that can be installed in boxes and conduit bodies.

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Grounding a Meter Socket

Consider a typical 120/240V single-phase service with a separate cast meter socket and a rigid steel conduit nipple connecting the meter socket to the service equipment enclosure.

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