256HC Mast Section Safe erection of Tower foundation
Tower hanging ground safety protection: no aluminum conductor and thread steel shall be used as ground body or underground ground wire for installation of tower. A thread connected wire must have an end. Take note of grounding:
1. Copper conductors with a cross section of not less than 28 mm or steel conductors with a cross section of not less than 50 mm are buried in the grooves, and the embedding length is determined by the grounding resistance.
2. The floor is made of steel plates, or other extensible metal plates, with an area of 1 square meter. It is buried 1.5 meters deep from the ground.
3. Ground using a regular ground pile, or 33 * 4.5 long 1.5 m steel pipe, or 70 * 70 long 1.5 m angle steel.
4. In the above three methods, the cross-sectional area of the ground body leading to copper wires should not be less than 25. If the soil is poorly conductive, sodium chloride(salt) can be buried in the soil and then filled with water. For walking tower hoists, each rail must be grounded, and the two tracks should be connected by wires.
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