The harm of unqualified cable sheath thickness

1. Reduce the service life of wire and cable products

It is easy to understand that after long-term operation, especially directly buried in the ground, immersed in water, exposed to the open air or corrosive environment, the insulation level and the thinnest point of the mechanical level of the jacket will decrease due to long-term exposure to the corrosion of the external medium.

Combined with routine cable sheath testing or line grounding failures, the thinnest points can be destroyed. This will lose the protection of the cable sheath. In addition, internal consumption can not be ignored, power cord and cable long time use will produce a lot of heat.

Here to add a hint: conductor allowed operating temperature of 70℃, PVC (PVC) long-term use temperature should not exceed 65℃. So the wires and cables are actually in the "inside and outside" case.

2, increased the difficulty of laying process

With the development of global industry, more and more environmental protection requirements must be small diameter, high voltage cable laying process need to be considered in the gap, so you can send the heat generated by the electric wire electric cable after electrify, the difficulty of laying too thick sheath thickness will be increased, so the thickness of sheath request strictly abide by the relevant standards, otherwise cannot protect wires. Also cannot blindly pursue its thickness.