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. 

The National Electrical Installation Standards (NEIS) are the only American National Standards Institute-approved performance and workmanship industry standards for electrical construction.

Branch-circuit markings


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.
 Branch-circuit markings


As Section 110.2 States, The National Electrical Code (NEC) provides installation requirements for electrical conductors and equipment that are either required or permitted to be installed. However, these conductors and equipment are only acceptable if the installation is approved.

The second article in the National Electrical Code (NEC), Article 100, contains definitions that are essential to the proper Code application. Article 110 contains many requirements that are essential to understanding and applying requirements located throughout the Code.

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.


READ MORE
 
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.


READ MORE
 
Box-Fill Calculations, Part VI

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


READ MORE
 
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.


READ MORE
 
Box-Fill Calculations, Part V

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


READ MORE
 
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.


READ MORE
 
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.


READ MORE

Pages