The Vermont Electricians’ Licensing Board and the Vermont Department of Public Safety Division of Fire Safety are in the proposal stage of adopting the 2011 National Electrical Code (NEC) with amendments. The proposed changes can be viewed online at: http://www.dps.state.vt.us/fire/licensing/Electrical.htm. There will be a public comment hearing scheduled for April 5, 2011 in Berlin Fire Safety Main Office, 1311 U.S. Route 302, Berlin, Vt. Comments can also be sent to Robert Howe, 1311 U.S. Route 302, Berlin, Suite 600, Barre, VT 05641-2351 or to his email, firstname.lastname@example.org
Vermont is considering adding seven more amendments to the existing five amendments. Two of these amendments are intended to address the common situation where a meter pedestal with a disconnect is installed remote from the building served. The meter pedestal is being defined by some inspectors as a structure and the disconnect as the service disconnecting means. This interpretation triggers the grounding requirements for services and defines the conductors to the building as a feeder, which will require the installation of an equipment grounding conductor. The first of these is a modification to the Article 100 definition of “Structure”. The proposal will add a new sentence to the definition that reads as follows: “A pole, pedestal or similar support used exclusively for a utility meter enclosures or combination meter overcurrent device enclosures shall not be considered to be a structure.” The second is a modification to 250.24(A)(5), where a new last sentence is proposed, which reads as follows: “An overcurrent device that is not within sight of, and not within 30’ of the building or structure served, shall not be considered to be the service disconnecting means.”
Other amendments include a modification to 110.3(A)(1), where the sentence is modified to require all listed or labeled equipment, the proposed amendment reads as follows: (A)(1) Suitability for installation and use in conformity with the provisions of this code as evidenced by listing or labeling by a nationally recognized testing laboratory.
Another proposed amendment deletes 110.24, the new 2011 NEC requirement for the field marking of the available fault current for service equipment in other than dwelling units.
Two more proposed amendments add two items to 210.8. One is a new item (A)(9) Laundry equipment and a new (B)(9) Unfinished basements as defined in 210.8(A)(5).
The last proposal under consideration is the deletion of 520.5(C). This section addresses wiring methods permitted to be installed in theaters and similar locations or portions thereof that are not required to be of fire-rated construction by the applicable building code. This will require the fixed wiring method to be metal raceways, nonmetallic raceways encased in at least 50 mm (2 in.) of concrete, Type MI cable, MC cable or AC cable containing an insulated equipment grounding conductor sized in accordance with Table 250.122.
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