How to Replace a Grounding Clamp

Loosen the retaining bolt holding the ground wire to the grounding clamp with a slotted screwdriver or the correct-size wrench to turn the bolt. Some grounding clamps use hex-head bolts and some use bolts with a slotted head. Pull the ground wire out of the clamp.

Loosen both mounting bolts holding the grounding clamp's two halves together, using the slotted screwdriver or wrench to turn the bolts. A grounding clamp's two-piece construction wraps around the ground source. Remove the old grounding clamp.

Remove all corrosion from the ground source's surface with sandpaper to clean the copper coating. Clean a 2-in.-long strip of the ground source.

Clean the end of the ground wire with the sandpaper. Remove all corrosion from the bottom 2 inches of the wire.

Position the new grounding clamp around the ground source's clean area, with the grounding clamp's wire retaining bolt facing away from the building. Tighten the grounding clamp's mounting bolts, using the correct wrench or a slotted screwdriver.

Insert the end of the ground wire into its slot in the grounding clamp. Center the wire's clean area in the grounding clamp and tighten the wire's retaining bolt with the slotted screwdriver or wrench.