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Power line receptacle testers designed to measure and assess the electrical characteristics of a power line receptacle. These testers consist of a plug-in device that can detect open (e.g., ground, live, neutral) lines and inverted connections (e.g., live or neutral); they usually include a display and/or visual and audible alarms to indicate correct or faulty wiring and open connections. Power line receptacle testers are used to assess the electrical characteristics of the most common healthcare facility receptacles (e.g., three-wire, 125-volt line supply); some testers can also determine the tripping current of ground-fault circuit interrupters by injecting a variable leakage current.
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