Learn About the
Changes in the 2008 National Electrical Code
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Top 2008 Code Changes
By Mike Holt
A new subsection of 240.24 addresses the installation
overcurrent devices in stairways.
"240.24(F) Not Located Over Steps. Overcurrent devices shall
not be located over steps of a stairway."
This change prohibits the installation of overcurrent devices over
steps in stairways. Clearly, it's difficult for electricians to safely
work on electrical equipment that is located on uneven surfaces such as
stairways. However, said overcurrent devices can be located over
landings adjacent to stairways.
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What's Wrong Here?
By Joe Tedesco
Think you know how this installation violates the
Web site to see the answer.
Hint: Float like a butterfly. Sting like a bee.
By Mike Holt
Q. What is the smallest size wire you can use
a lighting fixture whip?
Visit EC&M's Web
site to see the answer.
By Steven Owen
Q. When bonding a swimming pool perimeter
surface, where structural reinforcing steel is encapsulated in a
nonconductive compound, the following conditions apply:
- the conductor shall follow the contour of the perimeter surface
- only listed splices shall be permitted
- the required conductor shall be 18 to 24 inches from the inside
walls of the pool
- the required conductor shall be secured within or under the
perimeter surface (4 to 6 inches) below the subgrade, and
- the minimum conductor size and type shall be
- minimum 8 AWG, tinned, stranded copper
- minimum 8 AWG, bare, solid copper
- minimum 8 AWG, covered, stranded copper
- minimum 6 AWG, solid copper
Web site for the answer and explanation.
Walk-thru the basics of an Arc Flash study: Free One-Line, Arc
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implementation of your Arc Flash and Electrical Safety Program; what
used to take days, now takes mere seconds! EasyPower delivers the
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Shows and Events
Learn About the Changes in the 2008 National Electrical Code
In two informative and interest-filled days with Mike Holt,
you'll learn about major NEC changes that will impact your work,
you're an electrician, contractor, engineer, designer, or
maintenance person. You'll also earn continuing education hours and
professional development hours.
Two conferences are scheduled for later this year:
--September 4-5 in Portland, Ore.
--September 8-9 in San Antonio
For more information and to register online, go to http://CodeChangeConferences.com
Cool Electronic Cabinets
Stop electronic control downtime due to heat, dirt and moisture. UL
Listed Cabinet Coolers from EXAIR 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 literature.
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