The potential test pile is directly connected to the test pile by the line drawn from "magnesium alloy sacrificial anode material package", assuming node A. The e pipe thermite welding line is directly connected to the test pile at point B, and the reference electrode is connected to the test pile at point C. The dc at points A and C is the open circuit potential tested with A digital multimeter. The measuring current (10A) is the working current. Then. Point A connecting point B and point C is the load voltage and current test. That's what Dashikai does. Insulation valve insulation must be done first. The test again