Here we are, here comes a clever trick to distinguish between national standard and non-standard wires and cables!

At this point in the article, do you think the editor is going off topic

How could it be that the editor who is both civil and military, beautiful and wise, digressing from the topic?!! It doesn't exist!!!

Choosing wires and cables is actually similar to buying bags and shoes.

There are more and more types of wires and cables in the market, and their applications are also becoming more and more widespread.

If you are not careful, you will buy a bag that is not suitable for you.

Pooh, pooh, pooh, inappropriate wires and cables.

I have a clever trick here to distinguish between "national standard" and "non-standard". What are you waiting for?

The difference between Q1 "national standard" and "non-standard" wires and cables!

1. Non standard wires refer to cables and wires that do not meet the specifications and performance specified in national standards for specific purposes. Non standard wires use inexpensive second-generation sheathing materials, and low-quality wires generally have air holes, sand holes, unclear color, and thickness that does not meet the standard.

2. National standard wires refer to wires produced entirely in accordance with national standards. Generally, household and common electrical wires meet standard specifications and performance, and the national standard specifies five common specifications and performance. National standard wires have a soft feel, good fatigue resistance, high elasticity of plastic or rubber hands, and no cracks on the insulation of the wires. The national standard line premium product is 100 ± 0.5 meters per roll.

How to distinguish between "national standard" and "non-standard" wires and cables in Q2?

Take a look

Check for quality system certification;

Check if the certificate of conformity is standardized;

Check if there is a factory name, address, inspection seal, and production date;

Check if there are trademarks, specifications, voltage, etc. printed on the wires;

Also, it depends on the cross-sectional area of the copper core of the wire.

Normally, high-quality copper has a bright and soft color, otherwise it is considered defective.

Second Trial

A wire end can be repeatedly bent by hand, and those that have a soft feel, good fatigue resistance, high elasticity of plastic or rubber feel, and no cracks on the wire insulation are considered excellent products.

Triple scale

Wire and cable with good weight and quality are generally within the specified weight range for every 100m of weight.

For example, the commonly used plastic insulated single stranded copper core wire with a cross-sectional area of 15mm2 weighs 1.8-1.9kg per 100m; 2.5mm plastic insulated single stranded copper core wire with a weight of 3-3.1kg per 100m; 4.0mm2 plastic insulated single stranded copper core wire, weighing 4.4-4.6kg per 100m, etc.

Poor quality wires and cables have insufficient weight, either insufficient length, or excessive impurities in the copper core of the wires.

Four ratio price

Due to the low production cost of counterfeit and inferior wires, vendors often sell them at low prices under the guise of being cheap and high-quality, which can deceive people.

Therefore, when making a purchase, be careful not to be advertised by the merchant; Good quality and affordable" Confused and ultimately deceived.

Five Look Copper

Qualified copper wire cores should be purple red, shiny, and soft to the touch.

However, counterfeit copper core wires have purple black, yellow or white copper cores, high impurities, poor mechanical strength, poor toughness, and can easily break with a little force, and there are often wire breakage phenomena inside the wires.

When inspecting, you only need to peel off a section of the wire at one end, and then use a piece of white paper to slightly rub it on the copper core. If there is black material on the white paper, it indicates that there are many impurities in the copper core, and it can be considered as "" Non standard "wires and cables.