| 摘要 |
An electrical appliance having a switch controlled plug type connector may be plugged into any one of a plurality of power terminal receptacles connected to a power line through a wall switch or the like. Common ground and neutral conductors are interconnected in parallel with said receptacles while current carrying conductors interconnect in series normally closed contact pairs in each receptacle. The normally closed contacts in each receptacle are opened in response to insertion of the connector to complete an operating circuit and block completion of other operating circuits further from the power source.
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