Chapter 5 Wiring Methods 63 Copyright Goodheart-Willcox Co., Inc. • Measures must be taken to protect conductors against physical damage. When running cable through bored holes in framing members, the edge of the hole should be 1 1/4″ away from the nearest edge of the member. If a cable or raceway is placed along notches made in wood framing members, the notches must be protected from nails and screws by using a metal plate (minimum 1/16″ thick) to cover the notches. If cables or nonmetallic raceway is run perpendicular to exposed studs, rafters, or joists and subject to damage, strips of 1 × 1 or 1 × 2 wood stock should be placed along either side to protect the wiring from damage. Figure 5-2 illustrates methods of protecting conductors from physical damage. 1 1/4″ minimum Metal plate 1/16″ thick C Guard strips B A Goodheart-Willcox Publisher Figure 5-2. Conductors running through framing members must be protected. A—Holes bored through framing members must be at least 1 1/4″ from the edge of the member. B—Notches must be covered by a metal plate to protect conductors from nails and screws. C—Guard strips must be at least as high as the cable they protect.