When installing a THHN / THWN insulated conductor in a raceway that is located on the outside wall of a building or structure (wet location), the choice for the type of conductor insulation is permitted to be based on _____________. A. the use of THHN insulation rating, based on a dry location rating, as the inside of the raceway is considered to be a dry location. The installation shall also comply with  310.10(C). B. the use of THWN insulation rating, based on a wet location rating, ...

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