Protective circuit apparatus
 A protective circuit apparatus is disclosed for disconnecting power flow to an electrical device upon the sensing of a predtermined condition such as current flow above a predetermined level in the ground line or current flow in excess of a predetermined level in the power or hot line. In a preferred embodiment, the circuit for detecting excess current flow in the ground wire and the circuit for detecting excess current flow in the hot line are connected in series with a two to three wire converter circuit which insures proper connection to a source of electrical energy. 
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inventional inventional
Stewart P. W. Taliaferro
Barrett, Jr. Hughes