Item for 2011 NEC
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The designations "National Electrical Code" and "NEC" refer to the
National Electrical Code®, which is a registered
trademark of the National Fire Protection Association.
Pending Code Change Item for 2011
As noted in the NEC Committee Report on
Proposals, 2010 Annual Revision Cycle, Code-Making Panel 4 has
to accept a Code change submitted by Joel A. Rencsok of Scottsdale,
Ariz. (Log #307 NEC-P04). The recommendation calls for adding a new
section to Art. 225, which states:
"Raceway Seal. Where a feeder raceway enters a building or
from an underground distribution system, it shall be sealed in
accordance with 300.5(G). Spare or unused raceways shall also be
Sealants shall be identified for use with the cable insulation, shield
or other components."
As noted in the substantiation summary, feeders entering buildings
other structures are no different than services. The requirements
be the same as noted in 230.8.
You can download
an electronic version of the report via the NFPA Web site.
Although the comment period is now closed, the results of the
committee action on all submitted comments will be published in the
NEC Committee Report on Comments, which will be made available
all who request it. The Report on Comments mail date is
for March 29, 2010.
Imagine the possibilities.
The New Fluke 233 Remote
Display Digital Multimeter allows you to be in two places at once. The
removable magnetic display allows you to be 30 feet away from the
measurement point. See how it will expand your capabilities. www.fluke.com/remote_display_meter
What's Wrong Here?
By Brian J. McPartland
Think you know how this installation violates the
Web site to see the answer.
Hint: Working clearance
By Mike Holt
Q. How many feet of track lighting can I install
on a 20A circuit?
Visit EC&M's Web
site to see the answer.
By Steven Owen
When installing underground service conductors to a
building or structure, where the service conductors are installed in a
trench that has 24 in. of cover, what marking is required at what
distance above the underground installation? The underground service
conductors are not encased in concrete.
- Marking is not required. Therefore, no distance is specified.
- A pressure-treated piece of lumber (2x4, painted red) is required
be installed directly over the underground installation.
- A red warning ribbon placed 24 in. above the underground
installation is required.
- A yellow warning ribbon placed 12 in. above the underground
installation is required.
Web site for the answer and explanation.
Cool Electronic Cabinets
Stop electronic control
downtime due to heat, dirt and moisture. EXAIR Cabinet Cooler® Systems
produce 20 degree Fahrenheit air from an ordinary supply of compressed
air to cool electrical controls. Thermostat control minimizes air
Cabinet Coolers are UL Listed and maintain the NEMA 4, 4X and 12 rating
of the enclosure. Web site offers detailed information, a video, CAD
drawings, and PDF literature. http://www.exair.com/15/540_01a.htm
Code News Update
Delaware Adopts 2008 NEC
According to a recent Code Alert issued on Dec. 17,
by the National Electrical Manufacturers Association (NEMA), the
Delaware State Fire Prevention Commission announced the state had
adopted the 2008 NEC with an effective date of Nov. 11, 2009. The Code
was adopted in its entirety with just two amendments.
Three additional sentences were added to Sections 210.12(B) and
550.25(B). They read as follows: "Smoke alarms shall not be placed on
branch circuits protected by arc-fault circuit interrupters. All smoke
alarms shall be supplied by branch circuits dedicated to smoke alarm
equipment. The connection of the smoke alarm branch circuit to the
service shall be mechanically protected by utilizing lock-on
Shows and Events
The Electric West Show, to be held March 16-18, 2009 at
the Las Vegas Convention Center, is the perfect place to brush up on
latest NEC topics — and earn continuing education credits in the
process. Geared toward electrical contractors, consulting & specifying
engineers, electricians, and plant facility personnel, the conference
program will offer the following NEC seminars, presented by industry
experts such as Mike Holt, Keith Lofland, and Edward Gorginian.
For more information, visit our Web
site, or click here
- Analysis of 2011 NEC Changes
- Understanding Important NEC Requirements
- Dwelling Calculations
- Advanced NEC Calculations
- Grounding vs. Bonding
- Swimming Pools and Similar Installations
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