The burial depth of MV underground cable is generally 0.7 meters. According to relevant standards and regulations, the depth of direct burial of medium voltage underground cables should not be less than 0.7 meters, and fine sand with a thickness of not less than 50 millimeters should be evenly laid on the top, bottom, left, and right sides of the cable, and then covered with a hard protective layer such as bricks or concrete slabs.
In addition, there are other relevant requirements for the burial of MV underground cables. For example, the outer skin of the MV underground cable should be kept 0.6 meters away from the foundation of the underground building, but the minimum distance should not be less than 0.3 meters; The minimum clear distance between cables when they are horizontally close to each other is 0.1 meters, and the distance between MV underground cables in different departments is 0.5 meters; The minimum clear distance between cables crossing each other is 0.5 meters, which can be reduced by 2 in special circumstances. In special locations such as driving lanes or underground cultivation, the burial depth of MV underground cables should be appropriately deepened and should not be less than 1.0 meter
