Wire and Cable Safety Precautions

Wires and cables are a large category of electrical products used for transmitting electricity, transmitting information, and achieving electromagnetic energy conversion.If a large number of substandard products are found during random inspections, these inferior products will lay down many hidden dangers for the normal operation of the power system.Now, let Zhejiang Zhongjing Wire and Cable Co., Ltd.explain the reasons for the substandard quality of wires and cables and the precautions for everyone.

The reasons for the unqualified electrical wires and cables

Wire

Wires and cables with unqualified marks

The mark is the main way to identify the basic information of wires and cables.According to the standard, the main contents of the mark are: the product model, specification, standard number, factory name, and place of origin within a certain marking range.When the mark is unqualified, it will cause the construction personnel to make incorrect identifications, and in severe cases, it may lead to electrical accidents.

Size

Wires and cables with unqualified structural dimensions

The main problem with structural dimensions is the thickness of the sheath and insulation.When the thickness of the cable's sheath and insulation does not meet the standards, it will seriously reduce the resistance strength of the wires and cables and shorten their service life.In severe cases, it can cause the wires and cables to be broken, and the insulation (sheath) layer will not play its normal protective role, leading to electrical short circuits and fires.

Sheath

Wires and cables with qualified tensile strength and elongation rate before the insulation sheath ages

The insulation sheath of wires and cables with unqualified tensile strength and elongation rate before aging directly significantly shortens the service life of the wires and cables, and in the construction process or under long-term high-temperature power supply conditions, the insulation layer is prone to breakage, causing the conductors to be exposed and presenting a risk of electric shock and short circuit.The main reasons for the unqualified quality are one is the use of recycled materials to reduce production costs, and the other is small enterprises without production qualifications.

Cable

Wires with unqualified conductor resistance

Conductor resistance is an important indicator for evaluating whether the conductor material and cross-section of wires and cables meet the requirements.When the conductor resistance exceeds the standard, the loss of current passing through the line increases, intensifying the heating of the wires and cables.The main reason for the unqualified conductor resistance is that enterprises, in order to reduce costs, will shrink the copper material, which accounts for 80% of the raw material cost, to reduce the cross-sectional area of the conductor or use copper with excessive impurities, resulting in seriously unqualified conductor resistance of the wires and cables.

In addition to causing fires during use, it will also accelerate the aging of the insulation layer wrapped around the wires.Precautions for consumers when purchasing wires and cables First, observe the appearance of the wires.Qualified products have a soft, tough, and stretchable insulation (sheath) layer, with a tight surface and smoothness without roughness.If the plastic wrapping around the wires is easily peeling off, it indicates insufficient plastic strength.Second, observe the cross-section of the wires.Qualified products should have a metallic luster on the copper core surface, and blackened copper indicates oxidation.Finally, when purchasing wires, pay attention to checking the quality certificate.If the wire material quality is qualified, then the quality of the wires should also have been inspected and should not have too many problems.

To improve the safety of the home circuit, Zhejiang Zhongjing Wire and Cable Co., Ltd. suggestion

Everyone use low-smoke, halogen-free, and flame-retardant cables as home decoration wires.Continuously using high-purity oxygen-free copper as the core to prevent overload, and using environmentally friendly materials as insulation, greatly reduces the risk of leakage and short circuit, and as a ground wire, it brings multiple protections for your family.Such cables that comply with national standards can truly guarantee our safety.Do not have a chance psychology.Once an accident occurs, it will be too late to regret!

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The reasons for the unqualified electrical wires and cables

To improve the safety of the home circuit, Zhejiang Zhongjing Wire and Cable Co., Ltd. suggestion

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