The answer to this question is:
Stronger Cable Assemblies
A basic reason a coat serves is as a fire resistant. In any establishment, regardless of whether the cable is introduced inside a divider hole, keep running between floors in a wire pursue, introduced in a plenum territory, or is utilized as a part of an office/home condition, it is essential that the coat give the right level of fire concealment and security assurance required for the establishment condition.
Outer Regular Conditions
A few applications require cable jackets ready to withstand conditions not portrayed in the NEC. For example, if a get together is to be utilized as a part of a therapeutic situation, the coat material may need to withstand a solitary disinfection, or rehashed sanitizations. If so, the technique for disinfection would manage the kind of material that is utilized for the coat of the gathering.
A cable jacket offers extra security by incorporating the inward parts of a cable. On the off chance that a gathering did not utilize a jacketed link, the internal wires/sets could without much of a stretch be gotten or squeezed in close-by hardware causing untimely disappointment of the get together.
A jacketed cable serves many capacities, running from ecological security insurance to expanded sturdiness, or even corrective outline or simply straightforward recognizable proof. In a few occurrences utilizing a link coat can be of awesome advantage, in others circumstances it is a flat out need.