The combination of buried the earth in order to connect to the earth or several conductors is called ground pole.The ground pole is to fully contact the earth to achieve the electrodes connected to the earth. In electrical engineering, the grounding pole uses multiple 2.5m long, 45X45mm galvanized angle steel, nails at the bottom of the 800mm deep ditch, and then leads to the leading line.
How much is the ground?
Copper steel steel ground rod diameter 14.6 Copper thickness 0.5 ground pole ￥ 25.00 Copper steel cock steel rod φ25 copper thickness 0.5 ground function ￥ 65.00 Copper steel ground rod plating ground rod to protect the ground diameter 20mm ￥ 42.00 ￥ 42.00
Ground pole standard
First, the undercuts are made of corrosive steel plates. The area must not be less than 0.75m2, and the thickness shall not be less than 5mm; the local grounding pole shall not be less than 1m in length and not less than 22mm in diameter.Each tube must drill at least 10 pores with a diameter of not less than 5mm. The two iron pipes are perpendicular to the ground (the deviation is not more than 15 °), and it must be buried in a humid place.2. The distance between the two tubes is more than 5m, and the vertical depth must not be less than 0.75m; if the ground pole is relatively dry, the application of sand, charcoal and salt mixture or long -acting resistance is used;About 6: 1.Third, the ground resistance value of the ground -to -site one protection place must not exceed 2Ω. The resistance value of the ground wire and the ground connection wires between each mobile and handheld electrical equipment to the local ground pole shall not exceed 1Ω; Connecting the ground -to -ground rock line, the section should be not less than 50mm2 copper wires, or the section of a galvanized iron wire with a section of not less than 100mm2, or the flat steel with a thickness of not less than 4mm and the cross section is not less than 100mm2;The connection of the two ends of the cable connection device on the ground is connected.
Ground
First of all, the grounding pole can use the steel bars in the building foundation as the ground body, but the steel bars must be welded in electrical, and the vertical reinforcement in the house pillars is used to lead the line, and it has been connected to the roof lightning protection facilities.Secondly, many requirements are used to quote the steel bars to do artificial grounding. It is used when using the building foundation itself to be grounded and unable to meet the prescribed resistance requirements. Even if this is artificially grounded, the effect is better than using it.The building itself has a lot of ground difference.
What is the ground extremely
The ground pole is generally made of angle steel, and the top is buried into the ground.Because it is mostly entered, it is often said that the ground is extremely important.Of course, the function is to provide grounding protection. Generally, the electrical device is not equipped with the metal without charging metal. Once the failure causes the shell to be charged, when people come into contact with the charged shell.

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