1. When cables are inserted into each other, the high-voltage line shall be under the high-voltage cable. If one of the cables is maintained through the pipeline or separated by a partition within 1m before and after the insertion point, the minimum allowable interval is 0.25m.
2. When the cable is close to or interpenetrated with the heat pipe, if there are thermal insulation measures, the minimum distance between parallel and interpenetration is 0.5m and 0.25m.
3. When the cable crosses the railway or highway, it shall be cured through the pipe, which shall extend 2m beyond the highway or pavement.
4. The distance between the cable and the building foundation shall ensure that the cable is buried outside the building apron; When the cable is led into the building, it shall be maintained through the pipeline, and the maintenance pipeline shall also exceed the parking apron of the building.
5. The distance between the cable indirectly buried underground and the grounding of the common grounding device shall be 0.25-0.5m; The buried depth of cables indirectly buried underground shall not be less than 0.7m and shall be buried below the frozen soil layer.
