Boxes can be supplied factory prewired with high temperature lead wire protected with armorcable or wire braid.
接线盒可在工厂预先配有高温引线，引线由铠装电缆或金属编织来保护。
2
Except for conductor, armor layer and certain material under special conditions, all material of cable are combustion-retardant, highly combustion-retardant, and fire-proof material.
电缆除导体及铠甲层及特殊情况下的某种材料外，其它所有的材料均为阻燃、高阻燃、防火材料。
3
This paper shows the methods for determining the ideal Shielding factor of cable sheath, and gives the formulas for calculating the additional impedance due to magnetic flux in the steel armor.