1.cable max diameter is 15mm 2.lamp :Led and incandescent applicationThe incandescent lamp is suitable to the fixed lighting in lanes, hallway and power substation in power supply system with the voltage 127V, coal mine well with mixed explosive gases containing methane.Main Technical Parameters Type Rated voltage(V) Rated power (W)Illuminance(Lx)Max diameter (mm)DGS/127L(A)12712,18,24,30>=1015