Kao Chen
Member
2005 NEC. Commercial Greenhouse 'U' occupancy. The ventilation fans have relays that require 24 volt wiring. All 120/240 volt conductors must be rated for wet location by insulation or approved type of conduit.
I can not find a listing for class 1 conductors indicating whether the 24 volt wiring must be in conduit or whether the insulation can be placed in wet locations. This is separate from physical protection. All help would be appreciated. Please site code references.
Thanks
I can not find a listing for class 1 conductors indicating whether the 24 volt wiring must be in conduit or whether the insulation can be placed in wet locations. This is separate from physical protection. All help would be appreciated. Please site code references.
Thanks