Stakeless Earth testing:- The Fluke 1625-2 earth ground tester is able to measure earth ground loop resistances using only clamps. With Stakeless testing, the earth ground rod does not need to be disconnected - leaving the bonded earth ground system intact during test.

With this test method, two clamps are placed around the earth ground rod and each are connected to the tester. No earth ground stakes are used at all. A known, fixed voltage is induced by one clamp and the current is measured using the second clamp. Then the tester automatically determines the resistance of the earth ground rod.

This test method only works if a bonded earth ground system exists for the building or structure under test, but most are. If there is only one path to ground, like at many residential applications, the Stakeless method will not provide an acceptable value and the Fall of Potential test method must be used.

• 3- and 4-pole Fall of Potential, earth resistance loop testing
• 4-pole Soil Resistivity testing
• Selective earth ground rod testing using 1 clamp
• Stakeless earth ground rod testing using 2 clamps
• IP56 rated for outdoor use
• Professional carrying case
• USB data storage and transfer
• Automatic Frequency Control (AFC) - identifies existing interference and chooses a measurement frequency to minimize its effect, providing more accurate earth ground value
• R measurement - calculates earth ground impedance at 55Hz to more accurately reflect the earth ground resistance that a fault-to earth ground would see
• Adjustable limits for quicker testing
• Takes 6x AA batteries, not included
• Dimensions (W x H x D): 250 x 133 x 187mm
• Weight: 1.1kg, without accessories
• Fluke type 1625-2