THE MARIJUANA GROWER'S GUIDE..........by Mel Frank & Ed ...

A fixture with a three-pronged plug connected to a three-wire outlet is grounded in a properly wired house. You can also ground a fixture by connecting a #12 or #14 gauge wire to any bare metal screw (not an electric terminal) on the fixture housing to the screw that holds the cover plate on the electrical outlet your using. {With two prong outlets, connect an adaptor plug with a terminal (top ... ................
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