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  • Outlet Tester functions: AFCI, GFCI Trip Current, GFCI Trip Time, EPD Trip Current, Neutral to Ground Voltage, Hot, Neutral and Ground Impedance, Open or Reversed wiring
  • Measures loaded and unloaded AC Line Voltage
  • Displays Peak Line Voltage and Frequency
  • Calculates and displays % Voltage Drop and Line Impedance
  • True RMS AC measurements
  • Voltage drop measurements on 12A, 15A, and 20A loads
  • Voltage measurements: Line, ground-to-neutral, and peak
  • Measures frequency of the voltage
  • Measures Hot, Neutral, and Ground conductor impedances
  • Performs shared Neutral test
  • Checks 3-wire receptacle configuration
  • Finds false grounds
  • Tests GFCI, EPD, and AFCI circuits for proper operation
  • Display turns red when a problem is detected
  • Over-Temperature protection

The Extech CT80 circuit load tester is designed to quickly check for correct wiring of AFCI/GFCI outlets and circuit breakers. The CT80 can quickly and easily detect circuit and wiring problems such as: poor ground impedance, false grounds, missing ground fault protection, low voltage availability under load, and high ground-to-neutral voltage. Circuit and wiring issues can introduce shock hazards and can comprise performance of machinery and equipment. In addition, fire can result from the heat generated by high resistance points in a circuit. Proper wiring habits have been shown to greatly increase power quality performance.

The Extech CT80 circuit load tester is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.