2008 nec proposal first go around in the rop
1-202 Log #3606 NEC-P01
**Note: The Technical Correlating Committee directs that this Comment
and Proposal 1-160 be reported as “Hold” in conformance with 4-126.96.36.199
and 4-188.8.131.52 of the Regulations Governing Committee Projects.
Lanny G. McMahill Phoenix, AZ
**Comment on Proposal No:
**Reject this proposal and revise the section to read as follows:
“(A) Unused Openings. Unused cable or raceway openings in boxes,
raceways, auxiliary gutters, cabinets, cutout boxes, meter socket enclosures,
and equipment cases, or housings shall be effectively closed…”.
**Reject this proposal based on the submitterʼs substantiation
that states “By addressing only cable and raceway openings, other unused
openings that also require closing appear to be left out of the 2002 edition.”
Adding the words “circuit breaker” does not change that concern. In theory, if
the list continues to expand, only the specific openings listed are required to be
closed. For example, if a voltmeter, switch or pilot light were removed from
the front door of an enclosure, what code section requires the openings to be
closed? A list is always limiting. Generally, there should be no unused openings
in electrical enclosures, raceways and equipment except for those that are
required for the normal operation or function of the equipment or installation.
Instead of adding items to a list, delete the words “cable or raceway”, “meter
socket”, and “case, or housings” from the existing definition. The remaining
terms are clearly defined in Article 100. Using these terms eliminates the need
to continue to expand the list of “unused openings” that must be closed and
allows for a realistic enforcement practice.
**Panel Meeting Action: Accept
**Number Eligible to Vote: **
**Affirmative: 11 Negative: 1
**Explanation of Negative:
MINICK: The present language should have been retained. There is no substantiation
to include all openings in this requirement. Many enclosures have
weep or drain holes, which must not be closed. Additionally, many unused
mounting holes are not required to be closed to maintain the enclosure integrity.
Additionally, this would preclude ventilated enclosures.