TrickBonded NEMA 5 receptacle.AVI
Channel: inklipMedia / Robert Monk
Date: 2012-04-15

See more at:
http://www.phillylicensedelectrician.com/basic-wiring-methods/what-is-grounding-bonding/are-your-3-prong-receptacles-really-grounding/

Example from the field of the devious and dangerous practice of tricking ground/polarity testers by bonding the ground and neutral terminals behind a standard 120V, 3-prong receptacle. The practice puts voltage on exposed metal parts, as current in the circuit when a proper load is connected will divide through the insulated neutral conductor and the bonded ground system that includes everything metal through which the circuit wiring passes.