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8-124 Log #3403 NEC-P08 Final Action: Accept
(366.2)
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Submitter: Frederic P. Hartwell, Hartwell Electrical Services, Inc.
Recommendation: Revise as follows:
366.2 Definitions
Metallic Auxiliary Gutter. A sheet metal enclosure used to supplement wiring
spaces at meter centers, distribution centers, switchboards, and similar points of
wiring systems. The enclosure has hinged or removable covers for housing and
protecting electric wires, cable and busbars. The enclosure is designed for
conductors to be laid or set in place after the enclosures have been installed as
a complete system.
Nonmetallic Auxiliary Gutter. A flame retardant, nonmetallic enclosure used
to supplement wiring spaces at meter centers, distribution centers,
switchboards, and similar points of wiring systems. The enclosure has hinged
or removable covers for housing and protecting electric wires, cable and
busbars. The enclosure is designed for conductors to be laid or set in place after
the enclosures have been installed as a complete system.
Delete the parent text of 366.10, leaving only the title (?Uses Permitted?).
Substantiation: The present NEC text complicates one of the most difficult
tasks for NEC trainers within the scope of CMP 8, namely, explaining the
difference between auxiliary gutters and wireways. This is especially true given
that the equipment used is always listed for both functions, and only the
applicable field usage divides the two articles. Since the usage defines the
article application, it is essential that the definitions at the beginning of the
article focus on on this point.
This proposal includes the usage information now appearing in 366.10 in the
definitions for this reason. This proposal also carefully excludes from the
definitions any use of the word ?wireway? which really confuses one from the
other. This proposal does not change any code rules, but presents the
information in a far more understandable format. The syntax has also been
changed so it works purely as two definitions.
Panel Meeting Action: Accept
Number Eligible to Vote: 12
Ballot Results: Affirmative: 12