Grounding A Home Electric Generator
July 24, 2006
Q: I am installing a 5000 watt home generator. Instructions say to ground it to a copper grounding stake. The stakes I have found at building suppliers are 10 feet long. Is this length necessary? If so, how do you prevent the stake from bending when you drive it into the ground?
A: You need to install an 8′ x 5/8″ ground rod. I like galvanized as it doesn’t corrode like copper. The easiest way to install this is to rent a large hammer drill with a ground rod attachment. Look in your yellow pages under rentals; these typically rent for approximately $30.00 per day.
The ground rod needs to be installed flush with grade. Then just run a #6 bare copper wire from your ground rod to the lug provided on the generator frame. You need a 5/8″ acorn clamp to attach the ground wire to the ground rod.
Do you need assistance with your electrical wiring project? Please visit my DIY Electrical Wiring Help from a Master Electrician page. Where I provide electrical wiring tips, expert electrical advice, answers to your electrical questions and electrical consulting & design services over the phone, via instant messenger or via email.