Item for 2011 NEC
2008 NEC Adoption
Process Update in Florida
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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 8 has
to accept a Code change submitted by David A. Williams, Delta Township,
(Log #3622 NEC-P08). Williams recommended adding a second sentence to
392.7(A) that would read as follows: "Metal cable tray containing
non-power conductors (communication, data, signal, etc.) shall be
electrically continuous, through listed connections or the use of an
insulated stranded bonding jumper not smaller than a 10 AWG." He notes,
"The NEC presently does not require cable trays with non-power
conductors to be properly bonded. The NECA/NEMA 105-2007 Standard for
Installing Metal Cable Tray Systems provides bonding requirements in
Section 18.104.22.168 for installations of only non-power conductors. This
needs to be covered in the NEC." He adds, "Most contractors do not have
access to the NEIS standards."
The document is open for public review and comment through October
23, 2009. You can download
an electronic version of the report via the NFPA Web site.
All interested parties are urged to read this report and submit
comments on the forms provided in the report. Each comment received on
or before the closing date of the comment period will be considered and
acted upon by the NEC Code Committee. The results of the committee
action will be published in the NEC Committee Report on
which will be made available to all who request it. The Report on
Comments mail date is scheduled for March 29, 2010.
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What's Wrong Here?
By Brian J. McPartland
Think you know how this installation violates the
NEC? Visit EC&M's
Web site to see the answer.
Hint: Wiring methods permitted with plastic
By Mike Holt
Q. We do a lot of generators for residences, and
only recently have been getting written up on our transfer switches.
inspectors are saying that if I use the transfer switch to transfer the
entire house — and I put it between the meter and the service
disconnect — then the transfer switch must be "service rated." Can
help me understand the rules, please?
Visit EC&M's Web
site to see the answer.
By Steven Owen
A question has arisen related to whether a storage
battery installation has the required working space in accordance with
the 2008 National Electrical Code. The depth of the battery rack
supporting the batteries is 12 in. It's installed tight against a
concrete wall. Directly across from the battery rack is electrical
switchgear rated at 600V, with a nominal operating voltage of 480V.
Based on these facts, what is the required minimum depth of the
working space in the direction of live parts?
- 36 in. from the back edge of the battery rack to the front edge of
the electrical switchgear.
- 42 in. from the front edge of the battery rack to the front edge of
the electrical switchgear.
- 48 in. from the front edge of the battery rack to the terminals
inside of the electrical switchgear.
- 48 in. from the front edge of the battery rack to the front edge of
the electrical switchgear.
Web site for the answer and explanation.
Avoid Safety Violations
A dangerous shock hazard exists when electronics operate with the panel
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Coolers stop electronic control downtime with cold 20 degree Fahrenheit
air and maintain the NEMA 4, 4X and 12 rating of the enclosure.
Thermostat control minimizes air usage. Web site offers detailed
information, downloadable drawings and PDF literature.
click here for more
Code News Update
2008 Michigan Electrical Code
The 2008 Michigan Electrical Code will take effect on
Dec. 2, 2009. The new Code is based on the 2008 National Electrical
Code, with some additions, deletions, and amendments. The changes to
2008 NEC are outlined in this PDF,
which is posted on the Michigan Department of Energy, Labor & Economic
Growth Web site.
2008 NEC Adoption Process Update in
According to a recent Code Alert issued on Sept. 28,
2009 by the National Electrical Manufacturers Association (NEMA), the
state of Florida began implementation of the 2008 NEC on Oct. 1, 2009,
with one amendment to safety. As noted in an amendment to Chapter 27 of
the 2007 Florida Building Code, Section 2705 will now read as follows:
Equipotential Bonding GFCI Protection
2705.1 NFPA 70 - 08: National Electric Code, Article 680 (Swimming
Pools, Fountains, and Similar Installation), Section 680.22(B), GFCI
Protection, is amended to read as follows:
(B) GFCI Protection. Outlets supplying pool pump motors from branch
circuits with short circuit and ground-fault protection rated 15A or
20A, 125V or 240V, single-phase, whether by receptacle or direct
connection, shall be provided with ground-fault circuit interrupter
protection for personnel.
Exception: One- and two-family dwellings.
here to read NEMA's analysis on how this change came about.
PowerTest 2010, February 15-18, 2010 in Long Beach,
The InterNational Electrical Testing Association (NETA)
will host the 2010 PowerTest Electrical Maintenance and Safety
Conference February 15-18 at the Hyatt Regency in Long Beach, CA.
Highlights include: Safety, Equipment, Reliability, Renewable Energy,
and IAEI paper tracks, NERC/FERC symposium, three panels, seminars, and
an outstanding tradeshow. For more information visit www.powertest.org
Looking for a guide to state electrical codes,
enforcement agencies, and contractor/electrician licensing
Then check out the State Codes
and Licenses page on the NECA Web site. This reference can come in
handy when venturing out into a new geographic work area or taking up
residence in a new state. But that's not all. The site also offers
detailed information on low-voltage
licensing requirements and contact information for enforcement
agencies overseeing the installation of these types of systems (i.e.,
fire alarm and security).
Why do you need the 2009 UL White Book? For electrical
product information you can design around for Code compliant
installations. To reduce red tags on jobs. To pick a Code Section and
find the right product for the right installation. Download
the 2009 UL White Book now!
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