Article 353 -- High-Density
Black, White, and
Red All Over
Solicits Proposals for 2005 NEC
Grounding vs Bonding Seminar
NFPA Issues Call for
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The designations "National Electrical Code” and “NEC” refer to the
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Top 2005 Code Changes
Article 353 --
By Mike Holt
This new article covers use, installation, and
construction specifications for high-density polyethylene (HDPE)
and associated fittings. This type of conduit has been in use in the
United Kingdom for a long time. It's lightweight and durable. It
decomposition, oxidation, and hostile elements that cause damage to
other materials. It's mechanically and chemically resistant to a host
environmental conditions. Uses include communication, data, cable
television, and general-purpose raceways.
Behind the change: HDPE can be used in continuous lengths in
almost all outside underground locations. However, this product has
different properties than rigid nonmetallic conduit, therefore it has
its own article.
Two Powerful Tools in One: The Fluke 1587 and
Insulation Multimeters combine a digital insulation tester with a
full-featured, true-rms digital multimeter in a single compact,
Black, White, and Red All
A customer of mine who owns rental property recently
one of his properties inspected and was instructed to fix some
receptacles in the kitchen. When I tested a receptacle at the end of
counter next to a window with my plug-in tester, all three lights on
tester lit up. This combination of lights wasn't on the list, so I
checked the outlet with my multi-tester and found 125V from hot to
neutral, which was fine, but then I measured 125V from neutral to
and 250V from hot to ground. We deduced that someone had replaced a
receptacle (black and red on hot terminals, white on ground terminal)
for a window A/C unit with a 125V receptacle and put black (hot) on the
hot terminal, white (grounded) on the neutral terminal, and red (hot)
the ground terminal. Further investigation revealed that the wire was
tapped into a dryer receptacle directly below it in the wall. Luckily,
no one had been injured by this installation.
Send your 200-word story to us and it may
appear in a future issue of CodeWatch. Authors of stories chosen will
Cool Electronic Cabinets
Beat the heat and prevent hot weather failures. UL Listed Cabinet
Coolers produce 20 degree Fahrenheit air from an ordinary supply of
compressed air to cool electrical controls. Thermostat control
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.
What's Wrong Here?
By Joe Tedesco
How does this
installation violate the NEC?
Hint: The copper GEC is enclosed in a rigid ferrous metal
By Mike Holt
Q. Must receptacles be installed so they can be
removed without interrupting the power to any downstream receptacles?
See the answer.
By Steven Owen
What's the allowable ampacity of each of the
current-carrying conductors of a
4-conductor, 2 AWG, type SO cord that's rated 75°C by the
manufacturer and connected to a 3-phase, 4-wire piece of equipment (no
neutral load)? The conductors are installed in an area where the
ambient temperature has been determined to be 50°C by a
Visit EC&M's Web
for the answer and explanation.
Fuse Line Has Multiple Applications
AutomationDirect has launched the Edison Line of fuse products which
includes a wide variety of fuses and accessories. All Edison fuses can
be cross referenced and used as replacement for other name-brand fuses.
Available are the most popular 11/32" x 1-1/2" size Current Limiting
Class CC and Class M Midget general purpose fuses for industrial
applications. Visit www.automationdirect.com/fuses
Code News Updates
Proposals for 2005 NEC
Seems like just yesterday that you received your copy
the 2005 NEC, doesn't it...so what better time than now to start
thinking about making changes? Code-making panels are soliciting change
proposals for the 2008 NEC, so now's your chance to voice your concerns
about that requirement that's been bugging you. Proposals are due by 5
p.m. ET on Nov. 4. A copy of the proposal form is available in the back
of the 2005 NEC or at NFPA's Web
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.
The word "grounding" is often used when "bonding"
be, and vice versa. Although each process plays an important role in
protection of electrical systems, confusion still remains as to what
each means. Does the Code make an adequate distinction between the two
concepts? Visit EC&M's Web
site to tell us.
CodeWatch readers confirm that the NEC isn't the only standard they
monitor. In particular, more than two-thirds (69%) use NFPA 72 National
Fire Alarm Code on a regular basis.
Shows and Events
Grounding and bonding of electrical systems, sensitive
electronic, and communications equipment is the most important and
understood activity in the electrical, data processing, and
communications industry. At four two-day seminars, Code expert Mike
will explain the basics as well as the advance concepts necessary to
understand the practical grounding and bonding rules in the NEC for
systems not over 600V. Download
the conference brochure for specific dates and locations.
Call for Presentations
Got something important to say? NFPA has announced it's
now accepting proposals for presentations at its World Safety
& Expo in Orlando, Fla., June 4-9, 2006. Proposals are due Aug. 1,
and will be judged based on quality, relevance, focus, practical
application, timeliness, and on the presenter's experience and
credentials. Visit the
NFPA 2006 WSC&E site to submit your proposal online, or download
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