About lightning protection, grounding, how deep is the need to bury?
External lightning protection measures are mainly installed lightning arrester (such as lightning rod, lightning belt, lightning protection network, etc.), lead line and grounding device. The lightning collector is used for intercepting lightning to avoid the direct lightning strike of the protected object by lightning; the grounding device is used for the discharge of the lightning to the ground; and the grounding resistance is required; the lead wire is used for connecting a lightning receiver and a grounding device.
In fact, the concept of lightning protection is wrong, usually under the guidance of the mine to the surface.
The internal lightning protection measures include shielding, reasonable wiring, installation of lightning arrester (SPD), equipotential bonding and earthing. Shielding and wiring reasonably can reduce the effect of electrostatic and electromagnetic induction of lines and equipment; lightning arrester installation can limit the surge voltage on the line and guide the release of lightning current; equipotential connection can be avoided and the line between adjacent metal counter; grounding is an important guarantee for shielding and arrester function.
Ordinary steel can, brush antirust paint on steel, a steel bar with the ground can, but must have been received in the roof to be useful, the grounding grounding body is buried 2.5 meters, not less than 0.6 meters, just buried two or three meters can be, if you dig house a pile, buried in the hole Zhuangli best. The roof must be connected to the ground wire in a circle.
