Abstract Yachts moored in a marina and connected to shore power present a unique electrical safety hazard which may be as lethal as the proverbial “hair dryer in-the-bathtub.” This review will explore the implications of this and what we have learned from investigating many in-the-water electrical accidents, a number of which have involved fatalities. The [...]
(No Ratings Yet)Synopsis The main thrust of this article is to establish that Section 8 of the Canadian Electrical Code Part I does not have adequate rules to address derating factors for continuous loads, or to calculate the minimum ampacity requirements for the safe sizing of conductors and electrical equipment, when the underground ampacity calculation is performed [...]
(No Ratings Yet)As the season of sun comes upon us, many folks will be planning their summer vacations. To enjoy the freedom of adventure and flexibility, camping is the perfect family getaway. Whether one is using a folding camping trailer, a full-sized motor home or any of the many other models of recreational vehicles (RV), fun is [...]
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Connecticut had experienced unseasonably warm weather for the months of November, December and January, with days reaching into the sixties, but by February, winter had returned with a vengeance with nighttime temperatures declining into the minus six degrees range. On the night of February 20th, as I was just finishing an evening walk, my cell [...]
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The answer to this question is yes and no. That sounds like an answer from an inspector, doesn’t it? Yes, it is just a large container of water, but when you mix electrical equipment, such as pumps, heaters, and lighting with this large container of water, there can be problems. Article 680 addresses “…all swimming, [...]
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When inspectors see a photovoltaic (PV) power system for the first time, they will usually be faced with a type of wiring method not normally seen in residential or commercial electrical systems. That wiring method is the use of single-conductor exposed cables to connect the individual PV modules together in the PV array and is [...]
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Grounded Systems Generally Required Generally, electrical systems used in power distribution systems for premises wiring are required to be grounded. The NEC includes rules that often make this determination. Some electrical systems are required to be grounded, while other systems are permitted to operate ungrounded (see 250.20 and 250.21). Then there are those systems that [...]
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To protect your and your company’s wallets, it is very important to understand the rates for which you are being charged for electricity. In this segment, I am going to share with you and discuss in detail the small commercial electric rates of a typical utility. The example I am using is a utility that [...]
(No Ratings Yet)Section 10 of the Canadian Electrical Code, Grounding and Bonding, is probably the least well understood section of the electrical code, but it is one of the most important. Opinions abound on the absolutely correct interpretations. But almost everyone will agree that correctly installed grounding and bonding is most critical to a safe electrical installation. [...]
(No Ratings Yet)At a recent golf tournament for the construction industry, I spoke with a gentleman about a once very successful contractor who is no longer in business. I instantly figured that the gentleman had sold his business and pursued other endeavors. However, I found out that although he was successful, every dollar he made was spent [...]
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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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