Copper plumbing affords a good ground, and the grounding screw on a 3-prong electrical outlet will be as good as the ground connection at the electrical service.
(Copper plumbing; affords; a good ground) (the grounding; screw; on a 3-prong electrical outlet; will be as good as the ground connection at the electrical service)
Copper plumbing the grounding
affords screw
a good ground
on a 3-prong electrical outlet will be as good as the ground connection at the electrical service