A transformer is an electromagnetic device without any moving parts that allows for changes in voltage, current, and impedance. The goal of an ac power network is to generate a voltage on the generation side, step up the voltage for long distance transmission on the transmission side, and then step down the voltage for distribution to the load on the distribution side.
(3 votes, average: 5.00 out of 5)Rule 14-100 has requirements for reducing wire sizes connected to splitters, junction boxes and for control circuits such as pushbutton stations. The rule prescribes the minimum construction requirements for mechanical protection and maximum unprotected lengths of conductors so as to produce a safe installation. The rule is consistent in its overall requirements except for Sub-rule 100(d), which appears to be totally at odds with the remainder of the rule.
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Continuous improvement takes place throughout our lives. We learn from our mistakes and as we gain experience, we try hard to avoid repeating them. Without looking too hard, we can usually identify where our decisions could have been better. The Canadian Electrical Code, under continual review, is no exception. This article discusses some places where [...]
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There are some subjects in the Canadian Electrical Code that often become a source of heated discussions by the users. Selection of dry type transformers and selection of a proper rating of the transformers’ circuits is one of such controversial subjects. So, let’s try to clarify this seemingly complex issue. First of all, we need [...]
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According to the United States Geological Survey, the average American uses about 100 gallons of water each day. This, in turn, creates more than 31 billion gallons of wastewater, which is cleaned and recycled by wastewater treatment plants across the country. Under the Homeland Security Act, wastewater facilities play a critical role in the needs [...]
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Neon signs and field-installed skeleton tubing installations require a transformer or power supply to step up the voltage to a high level that will cause ignition of connected neon tubing. This transformer can be considered the “heart beat” of the neon sign or outline lighting system. Recent articles in the IAEI News have been written [...]
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Neon sign transformers differ from most other types of transformers one is likely to encounter. Unlike a more conventional transformer, for normal operation a neon sign transformer is specified to operate a minimum, as well as a maximum load. Why is this? To understand this requirement, we must look at what makes a neon sign [...]
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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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