Do you have a computer sitting on your desk? If so, chances are you have a surge protective device under your desk. As the use of products vulnerable to transient voltage surges and spikes continues to increase, the propagation of surge protection devices continues to increase. This article will focus on several types of surge [...]
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Transient Voltage Surge Suppressors (TVSS), also more commonly referred to as Surge Protective Devices (SPDs), have been applied as part of an overall power quality strategy for almost a decade. Moving into the future of utility deregulation and the increased reliance on electronic devices to control, process, and communicate information, SPDs will continue to be [...]
(No Ratings Yet)A century ago, building and construction trades experienced their first boom period as the U.S. rapidly shifted from an agricultural economy into an industrial colossus. Today, with an economic boom pointing America toward the new millennium, the nation is again facing a major shortage of skilled career employees in its largest industry—construction. With an economic [...]
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Many electrical inspectors can tell you that confusion about wire temperature ratings and equipment termination temperature requirements results in their rejecting installations. Information about this topic can be found in the National Electrical Code (NEC), testing agency directories, product testing standards, and manufacturers’ literature, but many people do not consult these sources until it is [...]
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A Historic Perspective on Surge Protection Surge protection was introduced into the first National Electrical Code (NEC) published in 1897. The primary focus at that time was lightning arresters. In 1981, NEC Article 280 was revised and re-titled “Surge Arresters” in order to align with industry terminology. The title change in the NEC also recognized [...]
(No Ratings Yet)Question: AFCI for branch circuits The new Section 210-12 of the 1999 National Electrical Code (NEC) requires arc-fault circuit-interrupter protection for some branch circuits. Does UL List such devices?
(No Ratings Yet)The National Electrical Code (NFPA standard 70-1999) contains rules for all electrical products and systems. This includes low-voltage and limited-energy systems of all types ranging from telecommunications/LAN to fire alarm to closed-circuit TV systems used for security purposes. There are important reasons for making sure that low-voltage and limited-energy systems are installed in accordance with [...]
(No Ratings Yet)There are two sets of rules for work in proximity of overhead high voltage lines: The rules for qualified persons and the rules for unqualified persons. There is no gray area. Occupational Safety and Health Administration (OSHA) regulation 29CFR1910.269(x) defines a qualified person as “one knowledgeable in the construction and operation of the electric power [...]
(No Ratings Yet)In this article, we will cover some of Canadian Electrical Code requirements for standby power and transfer switching. The National Building Code specifies the minimum requirements for emergency standby power supplies for different building sizes and classifications, for high-rise residential, commercial, industrial and commercial buildings depending upon size height and occupancy. It specifies the minimum [...]
(No Ratings Yet)The IAEI has participated in inspector certification programs for several years and is pleased to see a growing interest in certification by code enforcing organizations and electrical inspectors. Electrical inspectors in both Canada and the United states have become certified through programs developed and administered in each respective country. The goal is for all electrical [...]
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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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