| CONTENTS
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The Hollow Ground
Connection
What's Wrong
Here?
Code Q&A
Code Quiz
NFPA 70E Standard:
Speak Now, or Forever Hold Your Complaints
NEC Sessions
Scheduled for 2006 NFPA World Safety Conference & Exposition
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Nightmare Installations
The Hollow Ground
Connection
I was called to perform some work in an area containing
a small building and six tennis courts, which were scheduled for
demolition. The feeder conductor was 3/0 copper, and it was connected
to
a 200A breaker in a separate building. After disconnecting the feeder
to
the subpanel, I saw what looked like a No. 4 ground wire connected to a
ground rod. I grabbed my intermediate size cutters and was surprised at
how easy it was to snip it. I then took a closer look at the "acorn" on
the ground rod and the connection at the ground bar and noticed that
the
ends of this "wire" were flattened. The original installer had used a
piece of 1/8-inch copper water tubing for the connection!
Mike Walker
Columbus, Ohio
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Code Challenge
What's Wrong Here?
By Joe Tedesco
Think you know how this installation violates the NEC?
Visit EC&M's
Web site to see the answer.
Hint: Is this a new type of splice box?
Code Q&A
By Mike Holt
Q. Can we install coaxial cables inside the duct
work of an existing building?
Visit EC&M's
Web site to see the answer.
Code Quiz
By Steven Owen
Q. The installation of fire alarm circuits (Art.
760), communication circuits (Art. 800), CATV and radio distribution
systems (Art. 820), and network powered broadband communication systems
(Art. 830) installed in the hollow space above a suspended ceiling
does not require secure support independent of the existing
wires
used to support the ceiling for which of the following?
A) fire alarm systems
B) communication systems
C) community antenna television systems / radio distribution
systems
D) network powered broadband communication systems (voice and
data)
Visit EC&M's
Web site for the answer and explanation.
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Code News Update
NFPA 70E Standard: Speak Now,
or
Forever Hold Your Complaints
In accordance with the Regulations Governing Committee
Projects, the NFPA committee for the Standard for Electrical Safety in
the Workplace (NFPA 70E-2004) is now accepting proposals for
recommendations on content. So if you've got a beef with the current
wording in this document, or feel some additional information needs to
be added, then speak up now and let your voice be heard. The committee
will act on proposals received by 5 p.m. ET on Sept. 15, 2006, and that
action will be published in the committee's report. All proposals must
be submitted to Codes and Standards Administration on proposal forms
available in the back of all NFPA documents or from NFPA headquarters.
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Shows and Events
NEC Sessions Scheduled for 2006
NFPA
World Safety Conference & Exposition
The 12 sessions that make up the
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