The overhead linestandard difference between cable and non-standard cable for

When selecting a cable, select the cable according to the usage, and don't want to be cheap. I think that the cable is cheap and can be guaranteed to meet the standards, and there are none in all. For example, overhead cables (xlpe insulated 2x16mm2 abc cable, PE insulated abc cable and aluminum service drop). Some suppliers offer low quality products to deceive customers in order to meet customer price requirements.

Cables and wires are commonly found in engineering users and construction projects. These three types of cables appear:

1. National standard cable: The cable produced by the technology of relevant cable standards issued by different countries according to the standard is referred to as the international line. 

2. Marking cable: According to industry standards, there are mainly fewer cut corners, but it does not affect the large performance.

3. Non-standard cable: Produce products to meet the needs of the city. Today, wire and cable applications are becoming more widespread, and as a result, there are more and more types of wire and cable sold on the market. They usually do not meet the customer's cross-sectional area requirements, as well as conductor diameter requirements, to achieve low prices.

So, how do you distinguish between "national standard" and "non-standard" of wire and cable? The following six points:

A look: depends on whether the wire and cable products have a quality system certification.

Two tests: It is advisable to take a wire head repeatedly and bend it by hand. Any soft touch, good fatigue resistance, strong plastic or rubber feel and no crack on the wire insulation are excellent products.

Three weighing weight: good quality wire and cable, generally within the specified weight range per 100m weight. Poor quality wires have insufficient weight, either insufficient length or excessive copper core impurities.

Four-price ratio: Due to the low production cost of counterfeit and shoddy wires, when vendors sell, they often sell at low prices with low prices and good quality, which makes them fooled. Therefore, when buying, be careful, don't stun the mind for the "good quality and low price" advertised by the merchants, and eventually be deceived. 

Five look at copper material: The copper core of the fake copper wire is purple black, yellowish or white, with many impurities, poor mechanical strength and poor toughness.

Six quality inspection: In the case of differences in cable quality, it can be sent to a third-party testing agency for testing. Based on the eligibility of the authoritative test report.