I have a customer that wants to run the wiring for 4 under eve down lights inside his attic himself to save money and to keep exposed wire to a minimum. I usually run the Low Volt Direct Burial wire inside or under the gutters and I do not know what the NEC requirements are for his approach. What type of wire is required? He will be drilling a hole and passing the wire through a 2 x 6 board (not a hollow wall), would conduit be required here? Can anyone clarify these questions for me and add any other information I should be aware of? Thanks, Jim C.