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>I think that the language and the intent of the Code >both allow for the installation of NM cable in >buildings of Types I thru V. It seems that the >building in question is "mixed-use" and so would fall >under the "other sructures" portion of the Article. >Article 334.10(3) specifically mentions "...other >structures permitted to be of Types III,IV,V except as >prohibited in 334.12..." > >My understanding is that the Code allows for the >installation of NM cable in these "other structures" >of these Types because of the added requirement of a >"fifteen minute finish rating" which is applied in >other instances in the Code when dealing with >installation of a non-metallic product. To adopt a >position that NM cable cannot be installed in a >building which is of a Type considered >non-combustible/fire-resistive seems to miss what the >rule is intended to do: lessen the risks of spread of >products of combustion. When the fact that the >building in question is fully sprinklered is added to >the equation, it seems like an unnecessary restriction. > > >There seems to be a lot of confusion about article >334 >>Nonmetallic-sheathed Cable. Specifically Article >>334.10 uses permitted, and article 334.12 uses not >>permitted. >>After several conversations about this subject, it >>appears that there are different interpretations of >>the intent of the code. As I read the code it appears >>as though romex can be put in multifamily dwellings in >>the following types I,II,III,IV, and V. There are >>inspectors that disagree with this statment. It is my >>understanding that the intent of the code for uses >>permitted, is not all inclusive. When it states uses >>not permitted it is all inclusive. That being said, >>there is no place in the code that excludes me from >>using Nonmetallic-sheathed cable in type I, and type >>II buildings. When NFPA was asked to provide an >>official interpretation, the statement was made the >>the intent is very clear. Nonmetallic-sheathed cable >>is not restricted from being used in type I, and type >>II buildings.

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