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September-October 2000
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September-October 2000 CoverSeptember-October 2000

TABLE OF CONTENTS

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Features

AFCIS: Emerging Technology Solutions for Fires Resulting from Electrical Arcing

by Mike McManus

Code Making Panel 2 recognized the need for arc-fault circuit-interrupter (AFCI) protection when it accepted proposals and accompanying substantiation for the 1999 National Electric Code. Now, as the January 1, 2002, implementation of AFCI requirements in Section 210-12 of the 1999 NEC rapidly approaches, the technology and level of protection provided by various types of AFCIs are progressing rapidly as well. Read more

What is the IEC?

by Lori Tennant

As the electrical industry continues to grow and expand into a global economy, it is imperative that electrical safety not be compromised by the ongoing efforts to harmonize codes and standards worldwide. Read more

1+1 = Independent Grounding for Patient Areas of Health Care Facilities

by Gaylen Rogers

The purpose of the grounding portions of Article 517 of the National Electrical Code (NEC) is to reduce low voltage potential differences between electrically conductive surfaces that may be reached by a patient or care provider in the patient vicinity. Two independent means of grounding are required for the patient care areas and are connected in parallel. This limits the voltage and, thus, the electrical currents that the patient is exposed to and will reduce or eliminate the electrical shock hazard. Read more

Receptacle Testing in Patient Care Areas

by Steve Campolo

The National Electrical Code (NEC), sometimes referred to as NFPA 70, is the preeminent code covering electrical installations in the United States and in many other countries. The National Fire Protection Agency (NFPA) publishes the Standard for Health Care Facilities, NFPA-99, which specifically describes the maintenance and testing of various pieces of electrical equipment. This article will present methods and explanations about receptacle testing in patient care areas. Read more

ANSI: What Is It and What Does It Do?

by Jim Pauley

The American National Standards Institute (ANSI) — Most in the electrical industry have heard of it, but do you really know what it does? ANSI does not develop standards. Rather, it helps to facilitate the development of standards by establishing the guidelines for consensus, due process and openness. Read on to learn more about this critical element of the US Standards System. Read more

Origins of Neon Light

by IAEI

The first modern neon sign debuted in 1910 at the Grand Palais in Paris. It was created by a Frenchman named George Claude, who somewhat stumbled upon his discovery by accident. His purpose was actually to employ an inexpensive, high quality method of producing pure oxygen to sell to hospitals and welding shops. Read more

Proposed Changes for the 2002 NEC, Part 2

by Philip Cox

This is the second part of a summary of proposed changes for the 2002 National Electrical Code® acted on by NEC Code Making Panels in January 2000. Proposals submitted to change the 2002 Code are included in the NEC Report on Proposals. That document is available from the National Fire Protection Association. Those who wish to make comments on actions taken by the code making panels must submit them to NFPA. They must be received by NFPA no later than 5:00 p.m. EDST, Friday, October 27, 2000. Read more


Design: Is it Part of the National Electrical Code?

by Philip Cox

Section 90-1(c) is often cited in arguments against submitted Code proposals. In many instances, it is the only defense against proposals, even though the proposals also contain recommended safety rules. One only has to look in previous editions of the NEC Report on Proposals and NEC Report on Comments to see how frequently this reference is used. Since the term "design specification” is not defined in the Code, it appears to take on different meanings, depending upon the situation in which it is used. Because of how it has often been used, it may be best to eliminate 90-1(c) from the Code. Read more

Departments

Editorial

Wisconsin Chapter – Model of Performance

by Philip Cox

IAEI members and associated organizations rose to the occasion to make possible the completion of a construction project at the IAEI headquarters building in Richardson, Texas. Finishing the second floor area to create an educational facility has provided a more suitable environment in which to conduct meetings and perform training. In a previous editorial, those individuals and organizations who contributed to make this work possible were identified. I believe it is appropriate to give special recognition to one contributor who has not only risen to the challenge, but has achieved a level of support that could not have been anticipated. Read more

Canadian Code

Grounding and Bonding for Electronics

by Leslie Stoch

Computer signals are made up of a combination of zeroes and ones, and they are often below five volts DC. Voltage noise and voltage transients can disrupt the correct flow of electronic data, even when it is as low as two to three volts. A zero may be one to 1-1/2 volts and a one can be 3-1/2 to five volts. Therefore, two or three-volt system noise can change a zero to a one or vice versa, causing inaccurate data and other electronic problems. Read more

UL Question Corner

Metallic and Non-metallic Outlet Boxes Used in Fire-rated Assembly

by Underwriters Laboratories

Metallic Outlet Boxes are Listed under the category Metallic Outlet Boxes (QCIT), in the UL Electrical Construction Equipment Directory. The Guide Information for QCIT specifies the installation requirements for use in fire-rated assemblies. Information about UL-Listed metallic outlet boxes, including the Guide Information, can also be found by accessing UL’s online product certification database at www.ul.com. Read more

Other Code

This Pole Is Not Big Enough for Both of Us

by David Young

With the incentive of Internet access business, some telephone and cable TV companies are scrambling to add more communication cables to some already overcrowded utility poles. Each additional cable, whether installed as a separate attachment or installed by overlashing on an existing cable, adds mechanical load to the poles. Read more


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