If you have to ask you don't know enough to do this. Hire a competent electrician.
GS5558, I recently had a a new 200 amp service installed and the electrician told me they had to install a backup ground wire from the breaker box to a water pipe in addition to the ground that went to the stake they drove in the ground near where the service comes into my house. Does this violate the "one ground" rule cited above?
GS5558, I recently had a a new 200 amp service installed and the electrician told me they had to install a backup ground wire from the breaker box to a water pipe in addition to the ground that went to the stake they drove in the ground near where the service comes into my house. Does this violate the "one ground" rule cited above?