Grounding (Bonding) of Communications Systems
NEC Report on
Comments Available Soon
About this Newsletter
e-newsletter is brought to you from the
publisher of EC&M magazine.
Let you know what could be changing in the Code®.
Help you brush up on your ability to apply the
Test your knowledge of the Code® with a Q&A format.
Provide information on upcoming Code® seminars and
Give you an opportunity to sound off on
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.
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.
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!|
To find out
how to advertise in this newsletter, e-mail David Miller or call him at
The designations "National Electrical Code” and “NEC” refer to the
National Electrical Code®, which is a registered
trademark of the
National Fire Protection Association.
Top 50 NEC Rules
Grounding (Bonding) of Communications Systems
By Mike Holt
An accessible bonding point must be provided at service
equipment or the disconnecting means of separate buildings or
for communications systems. The point can be any one of the
The bonding of all external communications systems to a single point
minimizes the possibility of damage to the systems from potential
(voltage) difference between the systems.
- An exposed, nonflexible metallic raceway.
- An exposed grounding electrode conductor.
- An external connection approved by the authority having
FPN No. 2: Communications systems must be bonded together.
- Antennas / Satellite Dishes (810.21)
- CATV (820.100)
- Telephone Circuits (800.100)
Editor's note: This information was extracted from Mike
the National Electrical Code
Fluke 117 Electrician's Multimeter with
Non-Contact voltage. Designed by electricians. Engineered by Fluke.
Compact true-rms meter for commercial applications. The Fluke 117 is
ideal meter for demanding settings like commercial buildings, hospitals
and schools. The 117 includes integrated non-contact voltage detection
to help get the job done faster. For
more information, click here.
What's Wrong Here?
By Joe Tedesco
Think you know how this installation violates the
Visit EC&M's Web
site to see the answer.
Hint: Full service door
By Mike Holt
Q. I'm running a 4-wire lighting circuit with a
shared neutral. Can I use three single-pole breakers without handle
Web site to see the answer.
By Steven Owen
Q. Where a surge arrester is installed on a
circuit operating at less than 1,000V, it shall comply with all but
which of the following?
- The rating of the surge arrester shall be equal to or greater than
the maximum continuous phase-to-ground power frequency voltage
at the point of application.
- The surge arrester shall be identified for the application.
- Surge arresters shall be marked with short-circuit current rating
and shall not be installed at a point on the system where the available
fault current is in excess of that rating.
- Surge arresters shall not be installed on ungrounded systems,
impedance grounded systems, or corner grounded delta systems unless
listed specifically for use on these systems.
Web site for the answer and explanation.
One-touch automated design and one-touch automated protective device
coordination options, available in EasyPower 8.0, will be introduced in
the Hands-On training in Portland, OR April 30 -- May 4, 2007!
Streamline the implementation of your Arc Flash and Electrical Safety
Program. What used to take hours, now takes mere seconds! EasyPower
delivers Windows®-based tools for designing, analyzing,
and monitoring electrical power systems.
Code News Update
NEC Report on Comments
The 2007 NEC Annual Revision Cycle Report on
Comments will be made available a week from this Friday, on March
23. You can download the file from the NFPA
See something in the report you're not too happy with? You can
file an amending motion on the technical committee report by submitting
a Notice of Intent to Make a Motion by the deadline of May 4, 2007.
Certified motions that receive notice of proper Amending Motions will
presented for action at the annual meeting to be held June 3-7, 2007 in
Cool Electronic Cabinets
Stop electronic control downtime due to heat, dirt and moisture. UL
Listed Cabinet Coolers from EXAIR produce 20 degree Fahrenheit air from
an ordinary supply of compressed air to cool electrical controls.
Thermostat control minimizes air usage. Maintains the NEMA 4, 4X
(stainless steel) and 12 rating of the enclosure. Web site offers
detailed information, downloadable drawings and PDF literature.
Shows and Events
EC&M Code Change
Where do you turn when you need accurate information on
changes to the National Electrical Code? Acknowledged as the leaders in
providing information on the NEC, EC&M magazine and EC&M
Seminars have been the preferred sources of this information for more
than 60 years. Plans are currently underway to present seven Code
conferences in the fall of 2007. Host cities include: Atlanta, Boston,
Dallas, Orlando, Philadelphia, St. Louis, and Seattle.
As an approved provider with the National Council of Examiners for
Engineering and Surveying (NCEES), through its Registered Continuing
Education provider Program (RCEPP), professional engineers attending
of our 2008 Code change conferences will receive Professional
Development Hours (PDHs), a requirement for re-licensing in many
The conferences are also approved by every state that has a continuing
education requirement for contractors and electricians.
Hotel and registration information will be announced soon!
You are subscribed to this newsletter as #email#
For questions concerning delivery of this newsletter, please contact
Customer Service Department at:
Customer Service Department
A Penton Media publication
US Toll Free: 866-505-7173
Penton | 1166 Avenue of the Americas, 10th Floor | New York, NY 10036
Copyright 2014, Penton. All rights reserved. This article is
protected by United States copyright and other intellectual property
laws and may not be reproduced, rewritten, distributed,
displayed, published or broadcast, directly or indirectly, in any
without the prior written permission of Penton Media, Inc.