Ipad not charge how the matter. Said the cable or accessories have not been certified, and may not be able to cooperate with this ipad reliable work....
Then you get the repair station to see what is the problem
Several sets of cables in the same height of the laying, the adjacent cable between the bridge should be considered maintenance, maintenance needs, generally not less than 0.6m. This is just a matter of theory, it does not matter. Anyway, the actual construction is to do so,
According to the "Power Engineering Cable Design Code" GB-. 5.3.3 only asked for the depth of the cable buried directly: drop the blue skin to the ground depth, not less than 0.7 meters; when located in the roadway or farmland Under the appropriate should be deepened, and should not be less than 1.0 meters. 5.4.3 protected pipe buried in the ground, should meet the requirements under the depth of the pressure and environmental corrosion resistance. Through the uneven settlement of the backfill section and other places to increase the force, it is appropriate to use steel. Another direct burial should be selected armor type.