Electrical receptacle tester for testing the mechanical and electrical characteristics of electrical service receptacles

摘要

This specification discloses a device for performing a plurality of tests upon electrical power receptacles. The device comprises a housing which has protruding from it at one end a pair of blades of the size and spacing to duplicate the power carrying blades of an electrical power plug. A spring loaded projection from the housing bears against the receptacle when the blades are inserted therein and is driven into the housing against the action of a spring to test the grip of the receptacle contacts. A separate ground terminal is also spring loaded to test the grip of the receptacle ground contact. A knob is connected to the housing through spring members which exert a finite and preselected torque on the housing whenever the knob is rotated. This subjects the receptacle spring contacts to a twisting action to test their resistance to mechanical distortion. Signal lights indicate the proper or improper wiring of the receptacle contacts and the effectiveness of the grounding contact.