In North Ame North America, most modern homes have a rica, most modern homes have a functional electrica functional electrical ground system that interfaces l ground system that interfaces
with the Earthing plug-in cord. You just insert the prong end of the cord into the ground port (third
hole) of the wall outlet. If your home was built before the 1960s and has not fore the 1960s and has not been electrically re- been electrically re-
wired, you may require a wired, you may require a ground rod or professional ground rod or professional installation of a dedica installation of a dedicated grounding ted grounding
connection to the Earth. If you are unsure, have an electrician check your home for the presence of
a functional ground system or use a commercially available outlet checker.