Things That Go
Bump in the Lights
When to Say
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 Code®.
Test your knowledge of the Code® with a Q&A format.
Introduce you to the people who vote on the rule changes.
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
To sign up
for your free subscription, click here: Subscribe|
To unsubscribe from this newsletter click here: Unsubscribe
To get this newsletter in a different format (Text, AOL or HTML),
or to change your e-mail address, please visit your profile page to change your delivery
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 Bob MacArthur or call
him at (913) 967-1837.
The designations "National Electrical Code" and "NEC" refer to the
National Electrical Code®, which is a registered trademark of the
National Fire Protection Association.
Several years ago my children told me their lips would
tingle as they drank from the outside water hose bib. I took a drink
from it but didn't feel a thing. For at least six months they continued
to complain about it and I continued to feel nothing, until one day
I was filling our outside wood boiler with water while repairing the
draft fan on the boiler. After shutting off the power I
started to work on the fan, but I felt a tingle whenever I touched the
jacket of the boiler. So I got my meter and put one probe in the ground
and the other on the boiler jacket. It read 50V.
After some research I found the wire feeding the well pump had shorted
against the metal well casing. The pump is 150 feet down in the ground,
the electricity was energizing the water traveling through the pump up
the plastic pipe and into the copper water pipe. The pump must have
running when my children were drinking from the hose bib, but by the
time I would take a drink the pump had shut off. It wasn't tripping the
circuit breaker but was drawing about 17A. There was no ground in this
circuit so I changed
it out and grounded the casing of the well.
Snap Up Some Fun With Fluke
Join FlukePlus, the industry's first on-line program for professional
test tool users
Superglue to the Rescue
A few years ago when I arrived at a residence to do
troubleshooting, the woman of the house offered an interesting
assessment of the problem. "I'm not crazy," she said, "but I think we
have poltergeists in the house." She assured me that all of the wiring
in the house worked when they moved in, but strange things had started
to happen afterward. Some lights and plugs would work sporadically, and
then they finally quit altogether. I explained to her that rather than
living in a haunted house, I felt she was experiencing something that
could be more
easily explained. I ended up at the electrical panel and decided to
on each individual wire where they came into the electrical panel
through a 2-inch nipple in the back of the panel. What happened next
not totally unexpected. When I pulled on one of the wires it came
When I looked at the end of the wire I could tell that it had been cut
and it had what appeared to be some type of glue on it. Two of the
had been cut and glued back together.
Send your 200-word story to us and it may
appear in a future issue of CodeWatch. Authors of stories chosen for
publication will receive $25.
New 2004 Master Equipment Catalog
Harger introduces its NEW 2004 Master Equipment Catalog, which
represents a compilation of products to provide total system protection
for any facility or site. It includes grounding and bonding products,
Ultraweld exothermic welding products, lightning protection equipment,
ground testing equipment, surge suppression, telecommunications site
equipment and railroad signal & power bond products. This catalog is
available in a Three Ring Binder or CD-ROM. Ph: (800) 842-7437.
By Mike Holt
The requirements of Art. 702 apply to the installation
and operation of standby systems. This includes permanently installed
systems and those that are arranged for temporary connection such as
portable generators, which are commonly used at telecommunications
facilities, water and waste-water pump stations, and homes and offices.
Whenever you connect a fixed or portable standby generator to a
premises wiring system, you must do so through a transfer switch. In
addition, as per 702.10(A), Separately Derived System, if the transfer
switch for a portable generator switches the grounded (neutral)
conductor then the portable generator must be grounded in accordance
with 250.30. This means that the neutral of the portable generator must
be bonded to the generator case and grounding electrode in accordance
If the transfer switch for a portable generator does not switch the
grounded (neutral) conductor [702.10(B), Nonseparately Derived System],
then the equipment-grounding conductor must be bonded to the
system-grounding electrode. This means that the grounded (neutral)
conductors of the generator must not be bonded to the case [250.142].
However, the case must be bonded to a system-grounding electrode. The
grounding electrode system for the building can be used for this
UL Listed ETP Raintight Fittings Have Inspection Aid
ETP UL Listed Raintight EMT steel couplings and connectors feature
exclusive InspectoRidge External Inspection Aid for faster
identification by inspectors. Formed on the outside of the coupling or
connector, it allows an inspector to visually determine that the
is raintight. Offered in 1/2-inch to 1-inch trade sizes, the fittings
have an internal sealing ring and gasket, along with a KO sealing ring.
Choose from insulated or non-insulated throat. The rugged steel
construction has a zinc electroplate finish. The fittings install with
standard electrician tools and methods.
For information, call 800-621-1506. E-mail: firstname.lastname@example.org
What's Wrong Here?
By Joe Tedesco
How does this
installation violate NEC requirements?
Hint: The color of this conduit looks very similar to the
pots in my garden.
By Mike Holt
Q. Is GFCI protection required for a hard-wired
See the answer.
By Steven Owen
According to 314.28 of the 2002 NEC, what are the
minimum dimensions required for a metal junction box that has the
following raceways (conduits) connected to it? The junction box has
4-inch EMT raceways connected directly across from one another on
opposite walls. Each raceway contains three 250 kcmil XHHW conductors.
2-inch EMT raceway, which contains three 4/0 AWG XHHW conductors, is
connected to the same wall as one of the 4-inch EMT raceways. In
one wall has a 4-inch and a 2-inch raceway. The opposite wall has only
4-inch raceway. The wall at a right angle to the 4-inch and 2-inch
raceways has a single 2-inch EMT raceway connected to it. The 4/0 AWG
conductors are installed between the 2-inch raceways and are passing
through the junction box. There's no raceway on the wall opposite the
single 2-inch EMT raceway.
- 32 inches x 12 inches
- 32 inches x 32 inches
- 26 inches x 12 inches
- 34 inches x 12 inches
Visit EC&M's Web
for the answer and explanation.
Cool Electronic Cabinets
Prevent hot weather failures that can affect production. UL Listed
Cabinet Coolers produce 20 degree Fahrenheit air from an ordinary
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.
Faces of the Code
Code-Making Panel 14
No matter where he goes, Al Engler keeps seeing the
faces. After working on various standards that apply to hazardous
locations over the years, he has found that his contemporaries are few
and far between. "There just aren't a lot of people who deal with this
extensively," he says. "But I guess it's good that you know you have
people working on these standards who have a lot of experience."
Some of them have served with him on the International Society for
Measurement and Control's (ISA) SP12 committee on electrical equipment
in hazardous atmospheres. He sees some of them when attending IEC
meetings, where he's the U.S technical advisor for flammable dust
requirements. So given the limited number of experts in the field, it
wasn't surprising that he ended up gaining a spot on the NEC
panel devoted to hazardous locations when it went through what he calls
a "political upheaval" in 1999. After ISA was reclassified as a
manufacturer representative, a spot opened up and Engler went for
it...sort of. "The ISA main committee decides who they want to
them on the NEC," he says. "So they just drafted me."
Engler was introduced to the world of hazardous location
specifications while working for the Rosemount division of Emerson
Process Control. It was there that he first worked with Factory Mutual,
a commercial property insurance provider, and got a taste of certifying
equipment for a variety of hazardous areas around the world. From there
he went to Applied Automation, where again he dealt with some of the
same contacts at Factory Mutual, who eventually introduced him to ISA.
And the rest is hazardous location history.
Since then he's moved on to EGS, where he works as the director of
quality for the electrical construction materials division. He spends
most of his time fielding customer complaints that range from "It
doesn't work" to "The box has the wrong label." At the end of the day,
though, he gets to go back to his other job with that hazardous
family he can't seem to get away from. "It's a lot of work," he says.
"But it's worth it."
Drives, Starters, and Contactors Direct!
Cerus supplies top quality contactors, starters, and variable frequency
drives. Contactors are backed by industry first 5 year warranty.
Variable speed drives from 1/2 to 300 Hp featuring Space Vector PWM for
long motor life. Get all the facts.
See http://www.cerusind.com or call
1-800-962-3787 for a FREE catalog.
When to Say When
Al Engler says he sees a lot of the same people on the
various standards panels he works on. Having an experienced group of
veterans who can apply their expertise to several standards is
reassuring, but it also raises the questions, How many standards-making
bodies is too many for one person to serve on, and At what point does
go from working hard to help the industry to risking burnout and
overextension? Visit EC&M's Web
site to tell us.
Art. 90 introduces the NEC as an installation standard, and the
majority of CodeWatch readers agree it should stay that way. More than
two-thirds of you (68%) say that the Code can't be expected to set
standards for the electrical safety of the various products that
electrical workers may use from day to day.
The National Electrical Code Internet Connection, the No. 1
rated Code Web site in the world, offers the following FREE products:
Books, Code Quiz, DVDs, Graphics for PowerPoint, Newsletter, Online
Training, Posters, Simulated Exams, Software, Video clips, and Videos
Visit www.NECcode.com and stay
current with important industry issues.
Shows and Events
Haven't signed up for one of EC&M's 2005 Code
Change Conferences yet? There's still time. Download
the registration form, and pick the closest seminar. Fill it out and
it to (203) 929-5351. Registration for the second conference in
Philadelphia on Nov. 9-10, is only open through this Friday, so act
quick. And if you're planning on catching the Code caravan in Chicago
Nov. 15-16 or Orlando on Nov. 18-19, you better log on and sign up by
Sept. 16. Moderated by Mike Holt and Fred Hartwell (Boston conference
only), the two-day conferences will cover everything you need to know
about the 2005 Code. All attendees will receive a copy of the 2005 NEC
and EC&M's 2005 Code Change Book, written by Mike Holt.
You are subscribed to this newsletter as <*email*>
For questions concerning delivery of this
newsletter, please contact our Customer Service Department at:
U.S. Toll Free: (866) 505-7173
International: (402) 505-7173
Primedia Business Magazines & Media
9800 Metcalf Avenue
Overland Park, KS 66212
Copyright 2004, PRIMEDIA. All rights reserved. This article is
by United States copyright and other intellectual property laws and may
not be reproduced, rewritten, distributed, re-disseminated,
displayed, published or broadcast, directly or indirectly, in any
without the prior written permission of Primedia Business Magazines &