The downside is the cost. Ten feet of 1/2-inch galvanized rigid metal conduit is about $37, and you have to buy reels of insulated copper wires that are pulled into the conduit. Often the best ...

Explanation: To determine the distance between supports for straight runs of conduit, Sec. 344.30(B)(2) directs readers to Table 344.30(B) which confirms 12 ft as the maximum distance for the ...