How to Use Grounding Star Washers
Proper grounding keeps electrical systems operating correctly. When a ground wire or cable loosens from a grounding point, the electrical system loses grounding. This can result in equipment damage or fire. Star washers use uneven surfaces to increase friction between a fastener and a grounding cable. This keeps the fastener tight and maintains positive contact between the grounding wire or cable and the grounding stud.
Align the hole of a grounding cable with the hole for a threaded fastener, or slide the grounding cable over a grounding stud.
Slide a star washer onto a fastener or an installed grounding stud. Star washers utilize a standard irregular pattern on both sides, and do not have a front or back side.
Apply thread locking solution to the threads of the fastener or stud.
Thread a fastener into the aligned threaded hole or onto the threaded grounding stud. Turn the fastener clockwise -- by hand -- to lock the cable in place.
Hold the grounding cable in one hand while you tighten the fastener with an adjustable wrench to avoid twisting and possibly kinking the grounding cable.
Things You Will Need
- Grounding cable
- Threaded fastener
- Star washer
- Thread locking solution
- Adjustable wrench