James G. Stallcup

Code Contributor

James G. Stallcup is the CEO of Grayboy Inc., which develops and authors publications for the electrical industry and specializes in classroom training on the NEC and OSHA, as well as other standards. Contact him at 817.581.2206.

Articles by James G. Stallcup

February 2009
This article is a continuation of designing and installing electrical systems rated over 600 volts. Note that specific equipment as well as wiring methods and other items that form a complete high-voltage system are discussed. Selecting switchgear—490.30 through 490.47 READ MORE
January 2009
A faithful reader of ELECTRICAL CONTRACTOR asked how to design and install high-voltage feeders according to the 2008 National Electrical Code (NEC). He requested that I write an article pertaining to such an installation. He wanted to see Code validation of the requirements so that he could verify what the NEC had to say about these systems in cases where they are considered feeders. READ MORE
December 2008
A contracting firm I work for is bent out of shape over the new revised Section 210.4(B) and (D) in the National Electrical Code (NEC). The firm, plainly speaking, said this was going to require time to police the trimming out of a panelboard. Members of the firm noted that they use multiwire circuits, which include a neutral that is shared with ungrounded (hot) conductors. READ MORE
November 2008
I had the privilege of being the guest speaker at a recent contractors meeting, and to my surprise, I was asked an unusual question by a well-known local contractor during the question-and-answer period. He wanted to know how the National Electrical Code (NEC) defines and addresses the difference between branch circuit and supplementary protection devices when used in an electrical installation. READ MORE
October 2008
When instructing workshops for electricians, I have found that some of the participants get very confused about how the National Electrical Code (NEC) addresses the rounding up or rounding down of the size of an overcurrent protection device (OCPD) to allow a motor to start and accelerate its driven load. Round down or round-down size READ MORE
September 2008
I have found while teaching the 2008 National Electrical Code (NEC) that the electrical industry has mixed feelings concerning the changes that pertain to the installation of receptacles. The changes and revisions in the 2008 NEC and the impact they may have on installing receptacles in residential, commercial and industrial locations are somewhat controversial. READ MORE
August 2008
An electrician asked me a very interesting question concerning the sizing of a junction or pull box and the difference between the two. They are basically the same. Electricians use junction and pull boxes as access points for pulling and feeding conductors through raceway systems. READ MORE
July 2008
A client requested that I inspect a generator installation that was determined to be the cause of a fire. The client’s concern was whether the installation identified as an optional standby system complied with the National Electrical Code (NEC). READ MORE
June 2008
An electrical contractor called me with questions pertaining to the terminating of the neutral and equipment-grounding conductor (EGC) at a sub-fed panelboard. He was mainly concerned that the local inspector was allowing the grounded (neutral) conductor to be used as a current-carrying conductor as well as an EGC. READ MORE