Work grounded in each building, lightning protection and grounding and protection of ground combined grounded, and the use of the main building foundation reinforced grounding, the grounding resistance of less than 1 ohm. Lightning protection and grounding system and ground system in addition to the

The building in the earth, earth, and mine-protected ground 3 of the ground, use steel buildings based landscaping earth so that the ground is not less than 1 ohm resistance. Mine grounding system and work in an earth ground system and the rest are shared, independent.

Each construction uses the working earthing, the anti-radar earth and the protective earthing three union earth way, using the building foundation in the main reinforcement earth body, causes the earth resistance not to be bigger than 1 ohm.The anti-radar earth system and the working earthing system

Building grounding, earthing and lightning protection earthing grounding of three joint, use of buildings within the main steel grounding, grounding resistance less than 1 ohm. Lightning protection and grounding system and grounding system in addition to the grounding electrodes outside the common a

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