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Author: W. D. Ford
Publisher:
ISBN:
Category : Building sites
Languages : en
Pages : 126
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Book Description
The objective of this study was to ascertain the capabilities and limitations of the Ground Fault Circuit Interrupters (GFCI) used on Corps of Engineers (COE) supervised construction sites. Laboratory tests were conducted to determine (1) if GFCI samples from different manufacturers met the trip threshold design specifications of 5 mA plus or minus and (2) if condensation, hot-cold environment, vibration, and RF, UHF, and microwave fields adversely affected their operation. A limited field survey of COE supervised construction sites was conducted to evaluate the actual application of the GFCI. This survey included trip threshold measurements and discussions with COE and contractor personnel after nuisance tripping had occurred.
Author: W. D. Ford
Publisher:
ISBN:
Category : Building sites
Languages : en
Pages : 126
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Book Description
The objective of this study was to ascertain the capabilities and limitations of the Ground Fault Circuit Interrupters (GFCI) used on Corps of Engineers (COE) supervised construction sites. Laboratory tests were conducted to determine (1) if GFCI samples from different manufacturers met the trip threshold design specifications of 5 mA plus or minus and (2) if condensation, hot-cold environment, vibration, and RF, UHF, and microwave fields adversely affected their operation. A limited field survey of COE supervised construction sites was conducted to evaluate the actual application of the GFCI. This survey included trip threshold measurements and discussions with COE and contractor personnel after nuisance tripping had occurred.
Author: United States International Trade Commission
Publisher:
ISBN:
Category : Electric circuit-breakers
Languages : en
Pages :
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Book Description
Author: Robert W. Beausoliel
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 30
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Book Description
Author: Robert W. Beausoliel
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 24
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Book Description
Author:
Publisher:
ISBN:
Category : Construction equipment
Languages : en
Pages : 18
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Book Description
Author: Glenn B. Sims
Publisher:
ISBN:
Category : Building laws
Languages : en
Pages : 96
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Book Description
Author: National Fire Protection Association
Publisher: Delmar Pub
ISBN: 9780877659150
Category : Technology & Engineering
Languages : en
Pages : 870
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Book Description
Safe, efficient, code-compliant electrical installations are made simple with the latest publication of this widely popular resource. Like its highly successful previous editions, the National Electrical Code? 2011 LOOSE LEAF combines solid, thorough, research-based content with the tools you need to build an in-depth understanding of the most important topics. It provides the full text of the updated Code regulations alongside expert commentary from code specialists, offering code rationale, clarifications for new and updated rules, and practical, real-world advice on how to apply the code. And in a loose-leaf format, it's easy to customize your experience with the Code by adding job- and situation- specific materials. New to the 2011 edition are articles including first-time Article 399 on October, Overhead Conductors with over 600 volts, first-time Article 694 on Small Wind Electric Systems, first-time Article 840 on Premises Powered Broadband Communications Systems, and more. This winning combination has created a valuable reference for those in or entering careers in electrical design, installation, inspection, and safety.
Author: Simon Donahue
Publisher:
ISBN:
Category :
Languages : en
Pages : 62
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Book Description
Research and development is currently being performed to transform the United States' utility electric grid into a 'Smart Grid' [1,2] with the purpose of more efficiently distributing power, giving more control over the grid itself, and creating the potential savings for consumers. Smart Meters are among the first intelligent metering devices used within the 'Smart Grid' concept, allowing consumers to effectively track their power usage within their home. They have thus far been deployed in thousands of commercial and residential electrical installations around the US [3,4]. While the wide scale deployment of these devices has initially proven very successful, there is still much that is unknown about how they will impact the long-term operation of a large utility grid or the electrical devices sourced by them [5]. One such device, whose operation appears to be impacted by the Smart Meter, under specific conditions, is a ground fault circuit interrupter (GFCI). It has been reported that the RF transmissions from Smart Meters can induce false tripping events on GFCI outlets installed on temporary construction poles. In an effort to understand why this may happen, a research study, which is presented here, has been performed to understand the correlation between RF transmissions and GFCI tripping events on construction poles.
Author: Michael R. Yenchek
Publisher:
ISBN:
Category : Electric relays
Languages : en
Pages : 32
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Book Description
Author: Bruce Gifford (University of Manitoba student)
Publisher:
ISBN:
Category :
Languages : en
Pages : 88
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Book Description
