How deep is it to keep it safe? Thank youHello Using copper wire to do good? How deep is it to keep it safe? If the copper wire diameter is suitable for doing, how much? Copper exposed wire connection and how? There are pictures better, thank you!
Unnecessary。 It's too wasteful. The number of root 1.2-1.5 meters with zinc plating iron hit 0.8 meters underground, the number is determined according to the design requirements and soil conditions, spacing of 2 meters, connected by the flat iron or the 25 party can wire, fixed with bolts. If the underground water level angle into the best.
Copper is good, but it's not necessary. The cost is too high. Generally galvanized 40mm flat steel, 14mm Round steel, 4mm angle steel. Buried depth, depending on the soil, can not be generalized. In theory, try to bury it a little deeper.. It is better to use the pile foundation of the building to weld the steel bar as the grounding wire, which is the best effect. According to the requirements is the grounding wire cross-sectional area of not less than 25mm -
Of course, the copper material than iron, but the cost is too high is not necessary, now do grounding are generally used in galvanized flat steel it depends, what is the nature of the ground, if the grounding transformer is at least 1.5 meters, can check for specific,
