While standard receptacles typically use three wires -- hot, neutral and ground -- you'll occasionally find 2-prong outlets in older homes. Since this type of outlet lacks a ground connection, the ...

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Judge Adalberto Jose Jordan of the U.S. Court of Appeals for the Eleventh Circuit/photo by J. Albert Diaz/ALM The U.S. Court of Appeals for the Eleventh Circuit appeared ready to pick apart U.S.