Wire selection skills, high quality wire safety
According to statistics, 70 percent of fires are caused by electrical short circuits and aging.It can be seen that the quality of wire and cable is closely related to the safety of people's lives and property.Therefore, it is recommended that consumers do not covet cheap wire and cable in the process of buying wire and cable.
So, what kind of wire and cable is good?Today, let's take a look with Zen Cheng cable.
package
First look at the wire and cable packaging plate, there is no China electrical products certification Committee logo and production license number;See whether there is a quality system certification;To see whether the certificate is standard;See whether there is factory name, factory address, inspection seal, production date;See if there are trademarks, specifications, voltages, etc. printed on the wires.
view profile
In order to improve product quality and ensure that products meet national standards, wire and cable enterprises strictly check the purchase of raw materials, production equipment, production process and other aspects.Therefore, the qualified national standard wire and cable products have smooth surface and uniform color.
Look at the wire section
Cut off a section of insulation layer to see whether its core is located in the middle of the insulation layer.Excellent oxygen-free copper bright color, soft color, copper core is rose gold, indicating that the quality of copper used is better, and yellow white is the reflection of low quality copper.
secret of success
Can be a cable, high quality wire touch feel soft, bending radius, tear resistance, high strength, with good elasticity, repeated bending wire insulation surface without cracks, bulge.
Volume weight measuring
Length is the main visual method to distinguish the products in line with the requirements of national standards and counterfeit.When choosing and buying, do not coviciously cheap, choose and buy the actual number of meters below its nominal number of wires and cables.The length must correspond to the nominal number of meters.The state stipulates that the allowable error is ±0.5 meters per 100 meters.Good quality wire, generally within the prescribed weight range.
