334.10(3)

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augie47

augie47

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State Electrical Inspector (Retired)
Similar to a situation that was discussed earlier...
Pre-fab metal building. 15 ft ceilings. Builder constructs a large wood frame inner building. Building Inspector rules interior is non fire rated construction thus allowing 334.10(3) to be applied.
NM is behind 5/8 sheet rock on walls and ceiling but exposed on upper side of ceiling joists.
Would this still be considered "concealed within walls or ceilings that provide thermal barrier" ?
 
Not if the area where the NM cable is will be considered accessible, as you would commonly have in attic or truss spaces when these areas are required by a building code to have an access opening.
 
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