3-63 Log #2234 NEC-P03
Final Action: Reject
(300.9 (New) )
Submitter: Donald A. Ganiere, Ottawa, IL
Recommendation: Add new text to read as follows:
300.9 Raceways in Wet Locations. Cables and conductors installed in underground raceways or raceways that are located in wet locations shall be listed for use in wet locations.
Substantiation: The interior of raceways installed in wet locations is a wet location and the cables and conductors installed in such raceways should be listed for that purpose. I have submitted a proposal to delete the similar requirement for underground installations that is in 300.5(B). This new requirement will cover all raceways installed in wet locations.
Panel Meeting Action: Reject
Panel Statement: The requirement for cables to be suitable for the location in which they are to be installed is presently addressed in Section 310.8, and Table 310.13 applicable locations. Article 310 covers the general requirements for conductors such as insulation types, designations, and uses. To add the proposed text to Article 300 would be inappropriate since 300 deals with wiring methods in general. Repeating this requirement in Article 300 does not add clarity to The Code. See panel action and statement for Proposal 3-43.
Number Eligible to Vote: 13
Ballot Results: Affirmative: 13
3-52 Log #2257 NEC-P03 Final Action: Accept in Principle
(300.9 (New) )
____________________________________________________________
Submitter: Donald A. Ganiere, Ottawa, IL
Comment on Proposal No: 3-63
Recommendation: This proposal should be accepted.
Substantiation: I understand that panel?s point that conductors must be selected so that they are suitable for the locations where they are being installed. The point of this proposal is to make it clear that the interior of any raceway installed in a wet location is a wet location. That is not a completely accepted idea in the field. A section was added, 300.5(B) in a previous code to make it clear that the interior of all underground raceways is a wet location. This is the same issue with raceways that are installed in wet locations. The interior of the raceway will be a wet location and conductors or cables installed in these raceways must be listed as suitable for use in wet locations. If the interior of raceways in outside or wet locations is not also a wet location, why do sections 225.22 and 230.53 require that ?raceways on exteriors of buildings or other structures shall be arranged to drain?? Note: This proposal covers underground raceways and raceways in wet locations and if accepted, you should also accept Proposal 3-43.
Panel Meeting Action: Accept in Principle
Revise recommended text for 300.9 to read:
300.9 Raceways in Wet Locations Above Grade. Where raceways are installed in wet locations above grade, the interior of these raceways shall be considered to be a wet location. Insulated conductors and cables installed in raceways in wet locations above grade shall comply with 310.8(C).
Panel Statement: The panel accepts the recommendation to create a new 300.9 for aboveground wet locations and has chosen to place the underground installation requirements in 300.5(B). The text was not deleted in 300.5(B) since this entire Section 300.5 applies to underground installations. Providing additional underground requirements in a new 300.9 could be missed by the user of the Code. The requirement for using wet location listed conductors in the proposal was changed to ?complying with 310.8(C)? because there are three different methods to comply with insulated conductors and cables used in wet locations. They must be:
(1) Moisture-impervious metal-sheathed;
(2) Types MTW, RHW, RHW-2, TW, THW, THW-2, THHW, THHW-2,
THWN, THWN-2, XHHW, XHHW-2, ZW; or
(3) Of a type listed for use in wet locations.
See the panel action and statement on Comment 3-20a (Log #CC300).
Number Eligible to Vote: 13
Ballot Results: Affirmative: 13
Comment on Affirmative:
CASPARRO, P.: See my explanation of vote on Comment 3-20a.