Common Features:
Size: A #66 plate typically measures 1-1/2" wide x 2-1/2" tall, but the sizing can vary slightly by brand.
Material: Usually made of 16- or 18-gauge galvanized steel.
Installation: Hammered or nailed into the wood stud directly over the drilled hole where the wire passes through.
Usage rule: Required if the wire is within 1¼" of the edge of the stud (front or back).
Example Use Case:
If you're running a Loomex (NMD90) cable through a 2x4 stud, and the hole is too close to the front edge of the stud (less than 1¼”), you’d install a #66 plate over it to shield it from drywall screws.
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66 nail plate or protector plate used in electrical installations to protect wires or pipes that run through wood studs
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