110.12 -- Mechanical Execution of
Isn't Always Right
Faces of the Code
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The designations "National Electrical Code” and “NEC” refer to the
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Top 2005 Code Changes
Mechanical Execution of Work
By Mike Holt
This section requires electrical equipment to be
installed in a "neat and workmanlike manner," but the Code doesn't
provide details on what that means. A new FPN gives the Code user a
reference to an ANSI standard on the subject of installation
What the Code says: Electrical
must be installed in a neat and workmanlike manner.
FPN: Accepted industry practices are described in
ANSI/NECA 1-2000 Standard Practices for Good Workmanship in
Electrical Contracting, and other ANSI installation
(Modified Code wording is underlined.)
Behind the change: NECA has created a series of National
Electrical Installation Standards (NEIS) that establish the industry's
first quality guidelines for electrical installations. These standards
define a benchmark or baseline for quality and workmanship for
installing electrical products and systems. They explain what
electrical products and systems in a "neat and workmanlike manner"
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The Customer Isn't Always
Last issue we asked you for your scariest or
holiday lighting stories. Although not technically an installation, the
following submission was our favorite.
While working for Home Depot in the electrical department for two
Christmas seasons I encountered a handful of customers with a specific
problem: They were perplexed that they could not find an adapter with
male plugs on both ends that they could use to connect strings of
Christmas lights. I explained that the item they were looking for was
not even made. I even had one customer who wanted to know how they
get one made and market this item to the store. After I explained the
electrical hazard that this would create some would assure me that they
would tape up the exposed prongs on the end of the cord at the top of
the tree or at the end of the string attached to the house. I had to
point out that the best -- and safest -- solution was to remove the
lights and reinstall them female to male and so on.
Send your 200-word story to us and it may
appear in a future issue of CodeWatch. Authors of stories chosen will
Ultraweld TOP-LIGHT Mold Cover
Harger introduces TOP-LIGHT, a new mold cover design that
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connections. TOP-LIGHT makes the ignition process easier
to perform while substantially reducing the reaction emissions. Use of
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What's Wrong Here?
By Joe Tedesco
How does this
installation violate the NEC?
Hint: In case you're wondering, this equipment is energized.
By Mike Holt
Q. I heard that the Code only permits one
equipment grounding (bonding) conductor to terminate on a grounding
block screw terminal. Is this true?
See the answer.
By Steven Owen
According to the 2005 NEC, GFCI protection for
is required for 15A or 20A receptacles in all but which of the
- Outdoors in public spaces, at receptacles employees
use to plug in things like their engine block heaters in the winter
for other purposes any time
- For the power source of non-power-limited or power-limited fire
alarm circuits (excluding a dwelling unit unfinished basement)
- Near laundry, utility, and wet bar sinks in a dwelling unit
- For a boat hoist in a dwelling unit location
Visit EC&M's Web
for the answer and explanation.
UL Listed ETP Raintight Fittings Have Inspection Aid
ETP UL Listed Raintight EMT steel couplings and connectors feature
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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.
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Faces of the Code
Member, Code-Making Panel 6
A list of electrical industry "giants" contributed to
Bruce McClung's career as an electrical engineer, and he's proud to
them. He speaks with reverence of the men who taught him to
respect but not fear electricity, and he readily admits that their
tutelage inspired him to work to improve electrical safety throughout
the industry. "Without them, I would have remained somewhere in the
middle section of the engineering ranks," he says.
It was Francis Fox, an engineer at General Electric in the '60s, who
introduced McClung to the concept of using high-resistance grounding to
maintain safety in the industrial production environment at Union
Carbide Corp. (UCC) where he worked for more than 40 years until 2001.
his superiors were skeptical of the concept, they eventually relented
and implemented it at all of their facilities once McClung demonstrated
its merits. That pioneering spirit with regards to electrical safety is
what ultimately helped him reach the title of "corporate fellow,"
something no other electrical engineer at UCC had ever accomplished.
And it was Bernard Whittington, a fellow engineer at UCC, who showed
McClung the importance of participating in standards-making committees
by taking him on as his assistant while helping to establish OSHA
regulations. That experience cultivated a desire to join electrical
safety committees throughout his career, including several IEEE
standards-writing bodies and Code-Making Panel 6, which he's served on
since the 1978 cycle. "The willingness of mid-level managers to support
engineers who were involved in developing the standards and regulations
by which they were to be monitored and measured relative to safety and
productivity influenced my tenure at UCC," he says.
Now, at the age of 67, McClung is the co-owner of two electrical
consulting service companies -- Electrical Safety Consulting
Services and Mc Squared Electrical Consulting -- where he's
taking those lessons and applying them to solve hazards he might not
have imagined when he was still learning from Fox, Whittington, and
others. With arc flash now a chief concern in industrial environments,
he's still committed to improving electrical safety, which is why he's
still working when many would be enjoying retirement. "Electrical
is still in its infancy, ready to become a teenager," he says. "And
continue to do this work until it comes of age and matures to be a part
of everyone's cultural heritage.
Cool Electronic Cabinets
Low cost Cabinet Coolers stop electronic control downtime due to heat,
dirt and moisture. UL Listed Cabinet Coolers 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
Lights Out, Part 2
CodeWatch readers are evenly divided over whether
homeowners should be held to the 90-day limit on holiday lights
by 590.3(B) of the NEC.
The question, then, is how to enforce this rule. Chances are good
that most homeowners aren't aware of it, so what should be done to make
sure they adhere to it? Should electrical inspectors be expected to
monitor holiday lights in their areas and issue warnings or citations
needed? Visit EC&M's Web
to tell us.
Are You Paying Too Much for Enclosed
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Technical Committee News
Call for Members
NFPA is looking for a few good men and women for
openings on three technical committees. NFPA members interested in
joining the Committees on Electrical System Maintenance, Health-Care
Facilities - Electrical Equipment, and Health-Care Facilities -
Electrical Systems should download the
membership application and submit it to NFPA. For more information
on becoming a technical committee member, visit the NFPA's Web
The National Electrical Code Internet Connection, the No. 1
rated Code Web site in the world, offers the following FREE products:
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Visit www.NECcode.com and stay
current with important industry issues.
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