Application :

 These types of wires are used for fixed installation as connection wires in underground ducts, machines and control panels and control equipment.

Structure: 

 Cu/PVC

Conductor type and class: annealed copper, class 1 (meftoli), class 2 (semi-expanded)
Insulation material: PVC type C
Insulation coloring: according to customer request

 

The three wires used to carry electricity from one place to another are:
Live wire (L)
Neutral wire (N)
Earth wire (E)

To determine what gauge wire you need, consider the carrying capacity and the amount of current the wire needs to conduct (measured in amperage or amps). Wire gauge is directly related to how many amps you need to run through it. The distance you need the wire to go can also impact the gauge of wire you need.
The main electrical wire and cable types include single conductor wire ( single strand wire), multi-conductor wire ( stranded wire ) , single , two and three-core cables, and armored wire ( armored cable ).

So, USE cables stand for underground service entrance cables. Again, for cables to be used underground, they must be able withstand pressure and other elements.
In most cases, 3 core cables tend to be an electrical wire that has three separate copper conductors, each within its protective jacket, sheathed in an external jack or protective sheathe. The case with a 3 core and earth cable is different because there is a fourth conductor inserted during the manufacturing process.