Objective To accurately measure the earth pit resistance using an Earth Resistance Tester to ensure proper grounding and electrical safety. Equipment Required Earth Resistance Tester (with four terminals: P1, P2, C1, and C2) Two terminal rods (for current and potential measurement) Measuring tape (for precise placement of rods) Hammer (for driving rods into the ground) Connecting wires (for stable connections) Step by Step Procedure Step 1: Preparation Clean the Earth Pit – Remove debris and ensure unobstructed access to the pit. Check the Earth Resistance Tester – Ensure proper functionality before use. Preliminary Equipment Checks: Confirm that the tester has four terminals (P1, P2, C1, and C2). Ensure the pointer reads zero when the tester is not in use. Adjust the zero adjustment screw if necessary. Step 2: Connection Setup Short terminals P1 and C1 and connect them to the earth pit electrode whose resistance needs to be measured. Position the terminal rods as follows: Current Rod ...
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