| 摘要 |
A unitary housing including an electrical plug with externally extending prongs for insertion into an outlet or receptacle, an electrical switch in connection therewith, and an indicator of the presence or absence of electrical power applied to the prongs of the plug, with the electrical switch being of an amperage rating greater than that of a circuit breaker protecting the electrical power supply system, such that turning the switch "on", increases the supplied electrical power to overload the circuit breaker, before overloading the switch.
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