Direct in the ground 
1 The single-core cables are installed separtely,the distance between the cable center is 2 times of the cable Diameter.
2 Soil temperature:25°C
3 Max.Continous operating temperature of conductor 70°C
4 Thermal resistivity of soil:1.0°C.m/w
5 Depth of Direct-Buried:0.7m

Installation and Operation Condition of Cable
In air
1 The distance between centers of singal-core cables laid in paealled.Cross-sectioned area of conduct ≤185mm2;     2times of the cable diameter Cross-sectioned area of conduct ≥1240mm2 ;90mm.
2Ambient air temperature;40°C.
3Max.contionous operating temperature of conductor:70°C