When making an inspection on an electric sign or field-installed skeleton tubing installation, where does one begin? Well, there are undoubtedly several answers to that question from the many inspection jurisdictions charged with the task of adopting and enforcing the requirements of the electrical Code. Experience has indicated that there are a wide variety of [...]
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Emergency systems in buildings or structures can vary in size and complexity. Some basic emergency systems provide illumination of the egress paths through unit equipment connected to local area lighting circuits. Other more complex and multiple function emergency systems provide power not only for lighting for the egress path but for many other essential functions, [...]
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Up until now, I have been talking about dc, direct current, in which the current in the circuit travels in one direction. Batteries and other sources of dc are marked with what we call polarity marks, + and –. When a battery is connected in a circuit, the current comes out of the positive (+) [...]
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For certain vital circuits, the 2005 NEC requires that all overcurrent protective devices be selectively coordinated with all supply side overcurrent protective devices in the system. In addition, the definition for selective coordination has been added in Article 100. This commentary includes an overview of the requirements, what selective coordination means, the rationale for the [...]
(No Ratings Yet)From a presentation at the Canadian Section meeting. Inspections—Necessity or Burden There is a constant movement towards decreasing the cost of doing business both in the private as well as the public sector. This is not a new phenomenon but a mainstay of operating a business effectively and efficiently. There are costs for inspection programs [...]
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This is a question many inspection departments ask as budgets for governmental agencies are scrutinized and cut back. It is the field inspector that has the visibility to the customer, so this is where the priority also seems to be set. Just recently I was at a meeting with other inspection jurisdictions in the area [...]
(No Ratings Yet)Standards Technical Panels (STPs) are the consensus bodies for ANSI/UL Standards and advisory bodies for UL Standards. The STP process provides input from all interested parties—regulatory officials, design professionals, consumer groups, producers, government agencies, and others—at the earliest stage of standards development. Additional participation by AHJs will further improve what UL believes is a value-added [...]
(No Ratings Yet)At one time or another most electrical plan reviewers have probably asked the question, “Is it worth the time and effort?” Electrical plan review reminds me of a television commercial years ago about cleaning and polishing the silverware—it’s tedious and time consuming! Naturally, no one enjoys doing repetitive and tiresome tasks, as they tend to [...]
(No Ratings Yet)Limited-service controllers (LSC) are used as fire pump controllers within defined limits and restricted performance. LSCs are permitted in fire protection applications in instances where cost is a major factor and, if not permissible, would most likely result in the decision not to have any fire pump. They have been used in some nursing homes, [...]
(No Ratings Yet)The Canadian Electrical Code consists of three parts. Part I covers the installation and maintenance of electrical equipment, Part II is the safety standards for electrical products, and Part III is for outside wiring. This article will focus on Part I amendments. The Part I committee consists of: Part I members, associate members, subcommittee chairs, [...]
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IAEI, as the keystone of the electrical industry, is a membership driven, non-profit association promoting electrical safety throughout the industry by providing premier education, certification of inspectors, advocacy, partnerships and expert leadership in Electrical Codes and Standards development.
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