Installation of ground system consists of copper-plated steel piles 16x2400mm, the deep trench dug pile under 0.75 meters, 0.5 meters wide, the first ground rods driven into a groove bottom 10 cm, the distance of two consecutive poles is 4 -5 meters in the basement floor. Using bare copper cables to link the M70 earthing poles.
Using heat welding method of welding copper ground rods and cables to ensure electrically connected.
The system treated soil with chemicals to reduce electricity resistivity spread in trench earthing, this chemical will keep ground resistance values long-term stability.
The stakes have cable exit position downward lightning grounding assembly 01 composite box for easy check prices grounding resistor values Annual
Targets to be achieved: Grounding Resistors ≤ 4Ω grounding. if the construction is complete on nonstandard measure must be reported to the agency designed to make additional earthing system.
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