User Manual Q&AAnswer
Dec 21, 2024 - 03:36 AM
To use the Extech CB10 to test receptacles and GFCI circuits, follow these steps:
1. Plug the Transmitter / Receptacle Tester into a powered outlet. The two green LEDs should illuminate.
2. Rotate the Receiver’s Sensitivity adjustment from the OFF position to the HI position. The red LED should turn on. If the LED does not turn on, replace the battery.
3. Test the operation of the Receiver by placing it in close proximity to the transmitter. The receiver should beep and the LED should flash.
4. To locate a circuit breaker or fuse, set the sensitivity to the HI position and hold the receiver as indicated by the “UP — DOWN" label. Move the receiver along the row of breakers until the selected circuit is identified by the beep and flashing light. Reduce the sensitivity as needed to pinpoint the exact circuit breaker controlling the circuit.
5. To test receptacle wiring, plug the Transmitter / Receptacle tester into the outlet. The three LEDs will indicate the circuit condition. Refer to the diagram provided in the manual for the different conditions that the CB10 can detect.
6. To test a GFCI outlet, press the TEST button on the installed GFCI receptacle. The GFCI should trip. If it does not trip, do not use the circuit and call a qualified electrician. If it does trip, press the RESET button on the receptacle. Plug the Transmitter / Receptacle tester into the outlet and verify that the wiring is correct. Press and hold the test button on the tester for at least 8 seconds; the indicator lights on the tester will shut off when the GFCI trips.
7. If the battery in the receiver needs to be replaced, remove the receiver battery cover and install a new 9V battery, observing the correct polarity. Dispose of the old battery properly.
Please refer to the Extech CB10 user manual for more detailed instructions and safety precautions.
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