Extech Instruments ET10 User Manual

Model ET10
GFCI Receptacle Tester
Standard Receptacle
1. Always test on a known good circuit before use.
2. Refer all indicated problems to a qualified electrician.
3. Lights will indicate circuit condition: Correct, Open Ground, Open Neutral, Open Hot, Hot/Ground Reversed, or Hot/Neutral Reversed.
4. The tester will not indicate the quality of the ground connection, 2 hot wires in a circuit, a combination of defects, a combination of defects, or reversal of ground and
neutral conductors.
GFCI Receptacle
1. Before using the tester, press the TEST button on the installed GFCI receptacle, the GFCI should trip. If it does not, do not use the circuit and call a qualified electrician. If it
does trip, press the RESET button on the receptacle and plug in the tester.
2. Verify that the wiring is correct.
3. Press and hold the test button on the tester for at least 6 seconds, the indicator lights on the tester will shut off when the GFCI trips.
4. If the circuit does not trip, either the GFCI is operable but the wiring is incorrect, or the wiring is correct and the GFCI is inoperable.
5. When testing a GFCI installed in a 2-wire (non-grounded) system, the tester may indicate a faulty GFCI. If this occurs, press the TEST and RESET buttons on the GFCI to
determine proper operation.
6. GFCI test current is 6~9mA.
USER MANUAL