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Optional Standby Systems by Tom Garvey Many homeowners are installing standby power systems without knowing the requirements of the NEC. It is the electrician's job to ensure that the homeowner accomplishes this in a safe, code-compliant manner.

Power and Control Tray Cable: Type MC by Ravi Ganatra This article discusses how the requirements in both the installation code and the product standard are utilized to manufacture and install power and control tray cable, Type TC, products that are suitable for various applications. Are All Those GFCIs Out There Working? by Steve Campolo Ground-fault circuit-interrupter (GFCI) protection is required in various sections by the National Electrical Code, NFPA 70, but it is not specified whether the GFCI should be a circuit breaker type or a receptacle type. Recent data from the field is presented to answer questions regarding GFCI's operability. Installations and Inspections of Intrinsically Safe Systems by Michael J. Johnston The protection technique known as intrinsically safe systems has grown in popularity and use in hazardous locations because of its cost and improved safety. Energy Efficient Transformers by Philip J.A. Ling, P.E. This article examines the issues relating to the use of high efficiency distribution transformers in commercial and industrial facilities. Transfer Equipment for Installation in Accordance with NEC Article 702 by Alan Manche Article 702 provides guidance for installation of optional standby systems, which requires a permanently installed generator or "prime mover." However, thousands of portable generator systems are being installed, leaving the installer and inspector without an enforceable article in the NEC.

Editorial: The Inspector's Voice Needs to Be Heard by Philip H. Cox, CEO/Executive Director Electrical inspectors are a vital part of the electrical safety system. It is unlikely that one could adequately define the value of the service electrical inspectors provide to the public in preventing electric shock and damage to or loss of property through the enforcement of electrical safety regulations.  Canadian Code: Is Everything in the Electrical Code?  by Leslie Stoch Most of the time, we tend to rely exclusively on the Canadian Electrical Code for information, and for the minimum requirements on building a safe electrical installation.  Other Code: How Hot is That Wire?  by David C. Young, PE The conductor temperature is a critical part of the design, construction, and checking clearances of aerial electric supply lines. UL Question Corner   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.

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