The National Electrical Code1 (NEC) and the National Fire Alarm Code2 (NFPA 72) have an interwoven relationship that is paramount to the proper operation of fire alarm systems. In the same way, the electrical inspector and the fire alarm inspector have common goals. This article will develop and build on the last issue’s article, “The [...]
(No Ratings Yet)
Requirements for overcurrent protection for conductors are found in Article 240, Overcurrent Protection, which is found in chapter two, Wiring and Protection, of the NEC. Electrical conductors are required to be protected against overcurrent in accordance with their ampacity ratings that are specified in Section 310-15. Chapter three covers wiring methods, and the conductors installed [...]
(No Ratings Yet)No doubt everyone has experienced the frustration of a PC computer crash, lockup or unreliable data. Their cause is often due to voltage noise, formally defined as “unwanted disturbances imposed upon a useful signal to obscure its information content.” Transient power system voltages and high frequency leakage currents can result in such failures and other [...]
(No Ratings Yet)The Canadian Electrical Code provides us with rules for connections to heat-producing electrical equipment such as lighting, motors and continuously loaded equipment. Here the code has some special requirements, including minimum wiring insulation temperature ratings, reduced conductor ampacities and minimum spacings to ensure that unwanted heat is dissipated and will cause no harm to associated [...]
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Type Metal Clad Cable (MC) is being installed in virtually every type of building under construction today including stadiums, schools, multi-family housing, hotels, commercial retail and office, industrial plants and warehouses along with many other facilities. This article addresses the interlocked armor Type MC cable with conductors No. 8 CU and No. 6 AL and [...]
(No Ratings Yet)The National Electrical Safety Code (NESC) is now on a five- year revision cycle. The 2002 edition will be published on August 1, 2001, and “shall become effective no later than 180 days following its publication date” (Rule 016). There are a lot of changes. Over the next few IAEI News issues, I will try [...]
(No Ratings Yet)A report released by National Fire Protection Association (NFPA), indicates that fire deaths in 1998 due to cooking equipment rose 45 percent from the previous year, but that over all, the number of home cooking fires decreased by 8 percent to the lowest level in the nineteen years of the study. Cooking equipment fires remained [...]
(No Ratings Yet)Work on the 2002 National Electrical Code has been completed. Those using the NEC will find a significant difference in the new edition. It is likely to take some adjustments to become fully familiar with the new Code. Considerable effort has been made to make the new 2002 NEC more user friendly. It is the [...]
(No Ratings Yet)
The 2002 National Electrical Code brings changes to the industry. Adopting provisions to keep up with advancing technology and recognizing that many existing safety rules have to be modified to address specific situations require reexamination of existing Code rules on a regular basis. The Code development process needs the participation of experts in the field [...]
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It is not often that a new safety device is introduced to protect individuals from the dangers that may be present in residential occupancies. Smoke alarms, carbon monoxide detectors, and ground-fault circuit interrupters are recognized as essential life saving devices. In 2002, the National Electrical Code (NEC) will require a new electrical safety device, the [...]
(No Ratings Yet)
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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