The concentric cable is used as electric service entrance from the power distribution network until the meter panel (especially where it is required to prevent "black" losses or electric power robbery), and as feeder cable from the meters panel until the panel or general distribution panel, just as it is specified in the National Electrical Code.
This type of conductor can be used in dry and wet places, directly buried or outdoors; its maximum temperature of operation is 90 ºC and its voltage of service for all the applications is 600 V.
ASTM 、IEC、 BS and so on
Construction of concentric cable
1.Solid or stranded aluminium conductor
2.Insulation with XLPE or PE or PVC
3.For two conductor cable, it is applied a helical mesh of copper wires over the central conductor,
4.For three or four conductors cable , parallel conductor or stranded conductor
6.Helical mesh of copper wires
7. Wrapping tape
8.Black color jacket of PE or PVC
Single core: 20D ± 0.05, multi-core: 15D ± 0.05
Temperature Rating: 0°C to 70°C