The Fluke 1623-2 and 1625-2 are distinctive earth ground testers that can perform all four types of earth ground measurement. Specifically, the Fluke 1623-2 and 1625-2 testers are able to measure earth ground loop resistances using only clamps – called Stakeless testing. This method doesn’t require the use of earth ground stakes or the disconnection of ground rods.

Testing Methods

• 3- and 4-Pole Fall of Potential – standard earth ground testing using two ground stakes
• Selective testing – without disconnecting ground rods, a technician can measure ground resistance using a combination of stakes and a clamp.
• Stakeless testing – innovative solution using only clamps, instead of ground stakes, to measure earth ground loop resistance.