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 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
November 2003
210.70(A)(2) Lighting Outlets Required Lighting outlet and wall switch provisions for dwelling units, guest rooms (hotel, motel and similar occupancies) and certain areas in non-dwelling occupancies are covered in 210.70(A) through (C). The first subsection, covering dwelling unit provisions, contains the majority of this section’s requirements. READ MORE
October 2003
210.70(A)(2) Lighting Outlets Required Branch circuit requirements are covered in Article 210 of the National Electrical Code. Part III of Article 210 covers required receptacle outlets and lighting outlets. While 210.50 through 63 contain provisions specifying the placement of receptacle outlets, 210.70 contains lighting outlet and wall switch provisions. READ MORE
September 2003
Article 210 210.70(A)(2) Lighting Outlets Required Article 210 covers branch circuits except for branch circuits that supply motor loads only. Motor load provisions are covered in Article 430. Branch circuits with combination loads (motor and non-motor) must be installed in accordance with Articles 210 and 430. READ MORE

Pages