The Fluke 1620 series Earth Ground testers not only measure ground
resistance using the classic 'fall of potential test' but also enable
time saving testing using the 'Selective' and 'stakeless' methods.
Selective Testing does not require the electrode under test to be
disconnected during the measurement, thus increasing safety. The simple
'stakeless' method quickly checks ground connections using two current
probes clamped around the ground conductor under test.
Offering 'One-Button' simplicity, the model 1623 is an all-in-one
earth ground tester, while the model 1625 has extra versatility for more
demanding applications.
