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

August 2004
Article 314: Boxes, Conduit Bodies, Fittings and Manholes READ MORE
July 2004
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. As indicated by the title, this article covers more than just boxes, it also includes manholes and other electric enclosures intended for personnel entry. READ MORE
June 2004
220.19 Electric Ranges and Other Cooking Appliances Specifications for calculating branch-circuit, feeder and service loads are in Article 220 of the National Electrical Code. This article is divided into four parts: I. General, II. Feeders and Services, III. Optional Calculations for Computing Feeder and Service Loads, and IV. Method for Computing Farm Loads. READ MORE
May 2004
220.19 Electric Ranges and Other Cooking Appliances Branch-circuit, feeder and service-load calculation provisions are in Article 220 of the National Electrical Code. While Part I is titled “General,” most of the first part pertains to branch-circuit calculations. Part II contains provisions and demand factors for calculating feeder and service loads. READ MORE
April 2004
Cooking Equipment Calculations, Part IV 220.19 Electric Ranges and Other Cooking Appliances READ MORE
March 2004
Cooking Equipment Calculations, Part III 220.19 Electric Ranges and Other Cooking Appliances Article 220 of the National Electrical Code contains specifications for calculating branch-circuit, feeder and service loads. Part I, titled General, contains general requirements and specifications for computing branch-circuit loads. READ MORE
February 2004
Specifications for calculating branch-circuit, feeder and service loads are in Article 220 of the National Electrical Code. This article is divided into four parts: I. General, II. Feeders and Services, III. Optional Calculations for Computing Feeder and Service Loads and IV. Method for Computing Farm Loads. READ MORE
January 2004
Article 220 contains provisions for calculating branch-circuit, feeder and service loads. Following the requirements set forth in this article will provide the minimum size branch circuit, feeder or service. This information is then employed to help determine the size of conductors and overcurrent protection. READ MORE
December 2003
Article 210 specifies provisions for all branch circuits except for branch circuits supplying only motor loads. Article 430 contains motor load requirements. Branch circuits with combination loads (motor and non-motor) must be installed in accordance with Articles 210 and 430. READ MORE

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