Grounding is a critical component of electrical systems. Effective grounding provides a low-resistance path for
lightning and other phenomena that might otherwise damage electrical systems and injure personnel.
A common method for measuring the resistance of a grounding system is the Fall-of-Potential test, also
known as the 3-point or 3-pole test. This involves injecting a current into the ground at a distance from the
grounding system under test, and then measuring potential at different points between the grounding system
and injector electrode.
For more information contact:
AEMC Instruments
200 Foxborough Blvd.
Foxborough Massachusetts United States
508-698-2115
techinfo@aemc.com
www.aemc.com/