February 6, 2014 – AEMC’s ground resistance tester models 6416 and 6417 measure ground rod and grid resistance and impedance without the use of auxiliary rods.

Resistance and continuity of grounding loops around pads and buildings may also be measured. Both models include a high sensitivity measurement function enabling measurement of leakage current flowing to ground or circulating in ground loops from 0.2mA to 40A and resistances from 0.01Ω to 1500Ω, says AEMC. The devices offer test frequency selection boasting more accurate results in inductive environments; touch voltage indication and a warning buzzer; and loop resistance indication to alert that the measurement may not be ground resistance.