From the beginning, the National Electrical Code has included specific rules that are essential for protection of persons and property. Wiring and protection is covered more specifically in chapter 2 and is so titled. Article 250 provides the specific rules for grounding and bonding electrical systems and equipment. To understand how the grounding and bonding [...]
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This article provides readers with essential information about basic operation and basic time-current characteristics of branch-circuit-rated, low-voltage fuses and circuit breakers. These overcurrent protective devices (OCPDs) are typically used in main service disconnects, feeders and branch circuits of residential, commercial, institutional, and industrial electrical systems. There are other OCPDs used, such as relays and supplementary [...]
(1 votes, average: 5.00 out of 5)The object of the Code is very transparent on the fact that all prescriptive rules of the Code address the objective-based fundamental safety principles of the IEC Standard “Electrical Installations of Buildings”. This standard, IEC 60364-I, comprises the following types of protection: against electric shock (direct and indirect contact); against thermal effect (high temperature or [...]
(No Ratings Yet)Many electrical contractors and inspectors probably were not that familiar with the alternative minimum tax (AMT) a few years ago. However, in the past few years things have really changed. Even the name may trigger a lot of speculation. What, exactly, is this tax an “alternative” to? And, what does the word “minimum” mean? Is [...]
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The Electrical Safety Authority (ESA) is responsible for public electrical safety in Ontario, Canada, and operates as a Delegated Administrative Authority of the Government of Ontario. As part of its mandate ESA is given the authority to enforce the Ontario Electrical Safety Code (OESC). The Code defines the standard for safe electrical products and installations [...]
(No Ratings Yet)Electric utility rates vary greatly from utility to utility and from state to state. To protect your and your company’s wallets, it is very important to understand the rates by which you are being charged for electricity. The cost of electricity is so high that some commercial and industrial companies have entire departments whose sole [...]
(No Ratings Yet)Question: UL code correlation database I see that the 2006 White Book now includes an index that correlates the 2005 NEC to UL product categories, is there a UL code correlation database online that I can access?
(No Ratings Yet)The holidays are over and the stress of getting just the right gift for that special someone, of fighting the crowds at the stores, and wondering if the money will last is finally over. Now just the stress of paying the bills as they come in is on us. But was it not worth it [...]
(No Ratings Yet)The Canadian Electrical Code defines a grounding electrode as: “a buried metal water-piping system or metal object or device buried in, or driven into, the ground to which a grounding conductor is electrically and mechanically connected.” In other words, it’s whatever metal objects the code allows you to drive into or bury in the earth [...]
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Typically, when length is a factor in the installation, so is voltage drop. A variety of installations may involve feeders or branch circuits of considerable length. These include such installations as industrial plants; airports; tollway, highway, turnpike or street lighting; electrically controlled irrigation machines (also known as center pivot irrigation machines); installations on docks, marinas, [...]
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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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