Amprobe INSP-3 Wiring-Inspection-Tester - Manual (Page 16)

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and high technology electronics are reliant on
a good quality equipment ground for proper
operation. A typical rule of thumb is ground
resistance in most cases should be less than 2
ohms. Loose connection, splices or too small of a
ground conductor can cause high impedance. If
less than .05 ohms is indicated on a medium or
long wire run, check the test outlet for a short
between neutral and ground.
D) Polarity Test – This test checks for typical wiring
errors involving three wire outlets. Any wiring
errors should be corrected immediately before
further test of the outlet.
NOTE: Open hot is indicated by “No AC present”
Important Notes for Testing GFCI / AFCI Circuits
A) Consult the manufacturer’s installation
instructions to determine that the device is
installed in accordance with the manufacturer’s
specifications.
B) Check for correct wiring of the receptacle and
all remotely connected receptacles on the branch
circuit.
C) Operate the test button on the installed device.
The device must trip. If it does not – do not use the
circuit – consult an electrician.
NOTE: A good quality 3 to 2 wire adapter may be
used to test ungrounded systems with little loss in
accuracy.
Lighting or motor circuits may be tested by using a
good quality plug to clip lead adapter having not