I am in the middle of setting up shop and I am new to this forum. I have read a number of books and articles on DC. I thought the one real disavantage to using plastic as a DC duct, was that you had to run grounding wires with it? I have looked at a number of pictures, on this forum, and didn't see any grounding? What's up? What ist the real story?
Cost & ease of installation with plastic vs metal! Plastic is less until you have to run all those unsightly wires?