Charles R. Miller

Code Contributor

Charles R. Miller, owner of Lighthouse Educational Services, teaches classes and seminars on the electrical industry. He is the author of “Illustrated Guide to the National Electrical Code” and NFPA’s “Electrical Reference.” He can be reached at 615.333.3336, charles@charlesRmiller.com or www.charlsRmiller.com

Articles by Charles R. Miller

May 2006
220.14 Other Loads—All Occupancies Article 220 of the National Electrical Code (NEC) contains requirements for calculating branch-circuit, feeder and service loads. Knowing how to perform load calculations is an essential part of being an electrician. READ MORE
April 2006
An essential part in the life of an electrician is performing load calculations. Determining what size conductors and overcurrent protective devices to install is something most electricians do on a daily basis. Specifications for calculating branch-circuit, feeder and service loads are in Article 220 of the National Electrical Code (NEC). This article is divided into five parts. READ MORE
February 2006
314.28 Pull and Junction Boxes Requirements pertaining to the installation and use of all boxes and conduit bodies used as outlet, device, junction or pull boxes are in Article 314 of the National Electrical Code (NEC). READ MORE
January 2006
314.28 Pull and Junction Boxes Chapter 3 of the National Electrical Code (NEC) covers wiring methods and materials. Article 314 covers the installation and use of all boxes and conduit bodies used as outlet, device, junction or pull boxes, depending on their use. READ MORE
December 2005
314.28 Pull and Junction Boxes Article 314 of the National Electrical Code covers the installation and function of all boxes and conduit bodies used as outlet, device, junction or pull boxes, depending on their use. READ MORE
November 2005
Provisions pertaining to the installation and use of all boxes and conduit bodies used as outlet, device, pull and junction boxes are in Article 314 of the National Electrical Code. Section 314.16 covers provisions for sizing boxes and conduit bodies containing conductors 18 AWG through 6 AWG. READ MORE
October 2005
314.28 Pull and Junction Boxes The National Electrical Code covers outlet, device, pull and junction boxes; conduit bodies; fittings; and handhole enclosures in Article 314. As stated in the scope (314.1), this article covers the installation and use of all boxes and conduit bodies used as outlet, device, junction or pull boxes, depending on their use, and handhole enclosures. READ MORE
September 2005
314.28 Pull and Junction Boxes Requirements pertaining to the installation and use of all boxes and conduit bodies used as outlet, device, junction or pull boxes are in Article 314 of the National Electrical Code. Boxes and conduit bodies containing conductors 18 AWG through 6 AWG must be installed in accordance with the provisions in 314.16. READ MORE
August 2005
314.28 Pull and Junction Boxes The National Electrical Code (NEC) has specific requirements detailing how to calculate the maximum numbers of conductors in boxes (outlet, device, junction, pull, etc.) and conduit bodies. Provisions for boxes and conduit bodies enclosing conductors 18 AWG through 6 AWG are in 314.16. These boxes are calculated from the sizes and numbers of conductors. READ MORE

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