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Your vote will help us identify the 2011 Platinum, Gold,
and Silver Product of the Year award winners. EC&M subscribers,
simply review the products from the 2011
EC&M Product of the Year category winners list, and then choose
your favorite from the drop-down menu. Three lucky voters will be
randomly selected to receive $100. The voting poll will remain
open through 5 p.m. on May 20. Please, only one vote per EC&M
subscriber. Any votes received from manufacturers, PR firms, or
non-EC&M subscribers will not be counted.
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According to a recent Code Alert issued on March
16, 2011, by the National Electrical Manufacturers Association (NEMA),
the Rhode Island Building Code Standards Committee met on March 10,
2011, and voted to accept the recommendation of the Rhode Island
Electrical Code Subcommittee to amend the Rhode Island Electrical Code
(SBC-5) by updating the parent document from the 2008 NEC to the 2011
NEC. A public hearing on this adoption was scheduled to take place on
April 14, 2011.
Once approved by the Commission, the proposed code will be sent
to the Legislative Oversight Committee on Building Code Regulations. If
approved by the Legislative Oversight Committee, the proposed code will
be filed with the Secretary of State and become effective July 1, 2011.
The Subcommittee identified three technical provisions in the
2011 NEC to be modified: - An amendment to 210.25 to
incorporate an existing blanket variance.
- An amendment to permit a meter disconnect switch to be
installed at the meter, either on the line or load size of the meter,
without invoking the requirements for a grounding electrode or a
separate equipment grounding conductor.
- Deletion of 230.24(A) Exception No. 5, which permits the
vertical clearance of overhead service conductors above the roof surface
to be reduced to 3 ft if the area is guarded or isolated.
Visit the NEMA
website for additional details on this adoption news.
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Think you know how this installation violates the
NEC?
Visit EC&M's
website to see the answer.
Hint: Handyman
special
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Q. What is the minimum vertical clearance for
overhead service conductors above a roof?
Visit EC&M's
website to see the answer.
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When is a conductor with green insulation — or green
with one or more yellow stripe insulation — permitted to be used as
for other than grounding purposes? - Never.
- When working with 6 AWG or smaller conductors.
- When working with a power-limited Class 2 or Class 3 cable,
power-limited fire alarm cables, or communication cables in circuits
operating at less than 50V where connected to equipment not required to
be grounded in accordance with 250.112(I).
- On any circuit less than 120V.
Visit EC&M's
website for the answer and explanation.
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WHITE PAPERS
2011 Electroforecast
Notwithstanding
recent lower-than-expected employment numbers and a mid-year stall in
the housing market, the general U.S. economy has been showing some signs
of recovery since the recession ended in June 2009. However, with its
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Read the complete 2011
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About This Newsletter
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