Hello! I am attempting to rewire some lights for an elevated deck which are currently using aluminum wiring. The home was recently re-wired from aluminum to copper so this update is needed. Seeking advice as to proper wiring method. Can 14/2 Gray Solid CU UF-B W/G Wire be used for this without PVC Conduit or must this sleeved as the UF-B is for underground? Although the deck is elevated there is no usage of the space under the deck. The elevation varies from 6' to 15' off the ground. This is currently 120v and will stay as such, not looking to convert to low volt or LED.