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Wiring Methods and Overcurrent Protection by Robert A. McCullough One of the most fundamental elements of an electrical installation is the connecting of the wiring method to an overcurrent device. Overcurrent Protection and the NEC by George Gregory and Alan Manche The fundamental purpose of overcurrent protection is to protect conductors and equipment against effects of excessive temperatures. Circuit Overcurrent Protection by Clive W. Kimblin Circuit breakers protect the circuit conductors against overcurrent. Proper Application of Overcurrent Protective Device Interrupting Rating    by Daniel R. Neeser  NEC 110.9 requires the proper application of overcurrent protective devices with regard to their interrupting rating.

Feeder and Transformer Secondary Tap Conductors by Jim Dollard The discussion and application of the new 2002 NEC tap rules must begin with the conductor in question. The New 2002 Canadian Electrical Code, Part 1 by Richard Cohen The latest edition of the Canadian Electrical Code, Part 1, will include a number of significant changes that will affect members of the electrical industry.  Grounding Separately Derived Systems by Michael J. Johnston New requirements ensure that whether a system is intentionally grounded or is grounded by choice, it must follow the requirements in 250.30. Selection of Arc-Fault Circuit Interrupters (AFCIs) by Steve Campolo NEC 2002 requires that the branch circuits supplying outlets of dwelling unit bedrooms be protected by arc-fault circuit interrupters (AFCIs). Temporary Installations by Richard Owen Article 305 concerning temporary wiring has been relocated to Chapter 5 and reidentified as Article 527.

Editorial: Another Step Forward by Philip H. Cox, CEO/Executive Director The electronic age has opened the way to an exciting world involving advanced methods of communications. What was once thought to be science fiction or unrealistic dreams is now reality.  Canadian Code: Parallel Generation  by Leslie Stoch The Canadian Electrical Code, Rule 14-612 Transfer Equipment for Standby Power Systems prohibits the simultaneous connection of two or more power supplies to electrical equipment and facilities. Other Code: The 2002 NESC Strength and Loading $$  by David C. Young, PE The most significant change to the 2002 National Electrical Safety Code (NESC) is in the strength and loading requirements for aerial electric distribution and transmission facilities. Supporting structures and their supported facilities shall be designed to withstand extreme wind loading and a combination of ice and wind loading. UL Question Corner  (pdf) by Underwriters Laboratories The “UL Question Corner” answers questions of general interest that are sent in from authorized government inspectors and we believe will have interest for many inspectors. Ask CSA: Understanding the Canadian Electrical Safety Regulatory System. Part III: The Canadian Advisory Council on Electrical Safety by CSA Group The Canadian Advisory Council on Electrical Safety (CACES) is a council of electrical regulatory and certification experts who volunteer their time and money to develop common solutions to electrical safety and regulatory issues in Canada.

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