El ciclo phva

Cabling: The Complete Guide to Network Wiring,
Third Edition
David Barnett David Groth Jim McBee

San Francisco • London

Associate Publisher: Joel Fugazzotto Acquisitions Editor: Maureen Adams Developmental Editor: Brianne Hope Agatep Production Editor: Erica Yee Technical Editor: Toby Skandier Copy Editor: Sally Engelfried Compositor: Happenstance Type-O-Rama Color Insert Compositor:Judy Fung, Sybex, Inc. Proofreaders: Laurie O’Connell, Nancy Riddiough Indexer: Ted Laux Book Designer: Maureen Forys, Happenstance Type-O-Rama Cover Designer/Illustrator: Richard Miller, Calyx Design Copyright © 2004 SYBEX Inc., 1151 Marina Village Parkway, Alameda, CA 94501. World rights reserved. No part of this publication may be stored in a retrieval system, transmitted, or reproduced in anyway, including but not limited to photocopy, photograph, magnetic, or other record, without the prior agreement and written permission of the publisher. An earlier version of this book was published under the title Cabling: The Complete Guide to Network Wiring © 2000 SYBEX Inc, Cabling: The Complete Guide to Network Wiring, Second Edition © 2001 SYBEX Inc. Second edition copyright © 2001, Firstedition copyright © 2000 SYBEX Inc. Library of Congress Card Number: 2003115682 ISBN: 0-7821-4331-8 SYBEX and the SYBEX logo are either registered trademarks or trademarks of SYBEX Inc. in the United States and/or other countries. TRADEMARKS: SYBEX has attempted throughout this book to distinguish proprietary trademarks from descriptive terms by following the capitalization style used by themanufacturer. Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1

For Jordan and Cameron —D.B. For my wife, my daughter, my family, and my friends. —D.G. This book is dedicated to my family (Mom, Dad, sisters, cousins, and aunts). Over a distance of thousands of miles and many years, you still influence my actions every day. We are all products of our environment; mine was great! —J.M.Acknowledgments

I

originally got involved with this book by assisting Jim McBee with the initial writing of the first edition. Sybex subsequently asked me to revise the book for both the second and third editions. I’m grateful to Jim and everyone at Sybex for providing me with this opportunity. Thanks to all. Much of my cable knowledge was accumulated under the supervision of Dr. James S.Tyler, and I would be remiss if I didn’t acknowledge his significant contribution to my experience. Also, I would like to thank Jeanie Baer, RCDD, for her help and advice over the years and for keeping me up to date on what’s happening in the TIA Standards’ workgroups. Ron Hayes, practitioner of the black art of transmission engineering, deserves thanks and credit for suffering me as his occasionalsorcerer’s apprentice. I would like to thank Rob Jewson, RCDD, friend and business partner, for his advice and assistance. —David Barnett This book has been a long time in the making. First and foremost, I would like to acknowledge my co-author, Jim McBee, for his excellent work on this project. He should be proud of his efforts, and it shows in the quality of this book. Also, we would like toacknowledge the other behind-the-scenes people that helped to make this book, starting with Dan Whiting of Border States Electric Supply in Fargo, ND, for all the reference material and pictures he and his company provided. His expertise was invaluable in the making of this book. Thanks, Dan! We would also like to thank photographer Steve Sillers for taking many of the pictures throughout this book.This book would not exist without Sybex Acquisitions Editor Maureen Adams. Thanks for bringing Jim and me together and for managing this project. Additionally, I would like to thank Developmental Editor Brianne Hope Agatep, Editor Sally Engelfried for editing this book, and Production Editor Erica Yee for managing its production. Also, I would like to recognize the rest of the Sybex staff for...