| CONTENTS
|
Cast Your Vote Now!
Article
100: Definition of “Neutral Point”
What’s Wrong
Here?
Code Q&A
Code Quiz
Learn About the
Changes in the 2008 National Electrical Code
|
ADVERTISEMENT
|
|
About this Newsletter
|
This twice-a-month
e-newsletter is brought to you from the
publisher of EC&M magazine. CodeWatch will:
Let you know what could be changing in the Code®.
Help you brush up on your ability to apply the
Code®.
Test your knowledge of the Code® with a Q&A format.
Provide information on upcoming Code® seminars and
shows.
Give you an opportunity to sound off on
Code®-related
issues.
We want to make sure we're providing you with the content you need to
better manage your business or enhance your technical skills. E-mail us and let us know
what you want to see in future issues of this e-newsletter. We will do
our best to address your request in a future issue of CodeWatch.
|
Subscriptions
|
|
To unsubscribe from this newsletter go to: Unsubscribe
To subscribe to this newsletter, go to: Subscribe
To get this newsletter in a different format (Text or HTML),
or to change your e-mail address, please visit your profile
page to change your delivery preferences.
|
Back Issues
|
|
Missed an
issue? Visit the
CodeWatch archive on EC&M's Web site.
|
Tell a friend about CodeWatch
|
|
Do you know
of someone who'd like to receive CodeWatch? Visit the subscriber site, enter
their e-mail address and spread the wealth!
|
Advertising
|
To find out
how to advertise in this newsletter, e-mail David Miller or call him at
(312)840-8487.
The designations "National Electrical Code" and "NEC" refer to the
National Electrical Code®, which is a registered
trademark of the
National Fire Protection Association.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
|
| | | | |
|
EC&M Product of the Year Competition
Cast Your
Vote Now!
Do you want the opportunity to win a $100 gift check?
If
you’re an EC&M subscriber, we invite you to help us select
this
year’s Product of the Year winner. The deadline for voting is June
22,
2008. To make your voice heard, visit the EC&M Home page anytime before now and
then. Click on “vote now and become eligible for a $100 gift
check,”
located in the center of the page. You can click on a link for each of
the 24 category winners to read a brief description of the product
features and view a photo. Once you’re finished with your review, you
can click on the "vote here for your favorite" link, which allows you
to
enter in your contact information, choose your favorite product, and
click submit. As an added incentive to capture your vote, five lucky
voters will be randomly selected to receive one of five $100 gift
checks
― so don’t delay. Vote today!
The competition has honored innovation and excellence in product
development in the electrical industry for the past seven years.
ADVERTISEMENT
The Fluke 1735 Power Logger is the ideal electrician or technician's
power meter for conducting energy studies and basic power quality
logging. Set the Power Logger up in seconds with the included flexible
current probes and color display. The power quality meter measures most
electrical power parameters, harmonics, and captures voltage events. www.fluke.com/codewatch
Top 50 NEC Rules
Article
100: Definition of “Neutral Point”
By Mike Holt
This new term was added to Art. 100. The definition
reads as follows:
“The common point on a 4-wire, 3-phase, 120/208V or 277/480V
wye-connected system, the midpoint of a 3-wire, 120/240V single-phase
system, or the midpoint of the single-phase portion of a 120/240V
3-phase delta-connected system.
FPN: The potential of the
vectorial
sum of the nominal voltages from all other phases that utilize the
neutral, with respect to the neutral point, is zero volts.”
Rather than attempting to include all the concepts needed for the
definition of the term “neutral” in a single definition, the Task
Group of the Technical Correlating Committee chose to use two
interdependent definitions. The definition of “neutral point”
describes the point to which the neutral conductor is connected at the
source.
ADVERTISEMENT
 EasyPower delivers the easiest-to-use, most accurate
Windows®-based tools for designing, analyzing, and
monitoring
electrical power systems. Whether you’re developing or implementing
an
Arc Flash Safety Program, you can rely on ESA to help. Take
advantage of our free Arc Flash Videos, Arc Flash Book, Arc Flash
Specification, Ten Step Guide and more. Check out the quick links
on
our website today! www.easypower.com
Code Challenge
What’s Wrong Here?
By Joe Tedesco
Think you know how this installation violates the
NEC?
Visit EC&M's
Web site to see the answer.
Hint: Box-less devices?
Code Q&A
By Mike Holt
Q. Can the lights in a dwelling unit bathroom be
on the same circuit as the bathroom receptacles?
Visit EC&M's Web
site to see the answer.
Code Quiz
By Steven Owen
Q. When connecting a surge protective device
(SPD) grounding conductor of a Type 1 SPD at the service, which of the
following connections is permitted? Note: the SPD may be a surge
arrester or TVSS.
- Equipment grounding terminal in the service equipment.
- Grounding electrode for the service.
- Grounding electrode conductor.
- Grounded service conductor
- All of the above are permitted.
Visit EC&M's
Web site for the answer and explanation.
ADVERTISEMENT
 Cool Electronic Cabinets
Summer will be here soon! Prevent hot weather failures. EXAIR Cabinet
Coolers are the low cost way to purge and cool electronic controls with
20 degree Fahrenheit air. All models are UL Listed and maintain the
NEMA
4, 4X or 12 rating of the enclosure. Many cooling capacities are
available. Web site offers detailed information, downloadable drawings
and PDF literature. EXAIR Corporation
www.exair.com/15/540_05b.htm
Shows and Events
Learn About the Changes in the 2008 National Electrical Code
In two informative and interest-filled days with Mike Holt,
you'll learn about major NEC changes that will impact your work,
whether
you're an electrician, contractor, engineer, designer, or
plant/facility
maintenance person. You'll also earn continuing education hours and
professional development hours.
Two conferences are scheduled for later this year:
--September 4-5 in Portland, Ore.
--September 8-9 in San Antonio
For more information and to register online, go to http://CodeChangeConferences.com
ADVERTISEMENT
Eliminate Red
Tags
It takes more than the UL Mark on a product to satisfy code
requirements. Before your next installation, use UL's Code Compliance
Database to identify the correlation between model codes and UL
Certified products, as well as find manufacturers of certified
products.
Click here today to
find up-to-date UL Listed products at the UL Code Correlation Database.
|
|
You are subscribed to this newsletter as #email#
For questions concerning delivery of this newsletter, please contact
our
Customer Service Department at:
Customer Service Department
EC&M
A Penton Media publication
US Toll Free: 866-505-7173
International: 847-763-9504
Email:ecmweb@pbinews.com
Penton Media, Inc. | 1166 Avenue of the Americas, 10th Floor | New York, NY 10036
Copyright 2013, Penton Media, Inc. All rights reserved. This article is
protected by United States copyright and other intellectual property
laws and may not be reproduced, rewritten, distributed,
re-disseminated,
transmitted,
displayed, published or broadcast, directly or indirectly, in any
medium
without the prior written permission of Penton Media, Inc.
|
|
