Do you get out of these mistakes when buying wire and cable?

There are not many people who buy Wires in daily life, but it's hard to say how to pick wires and cables. Because a lot of people lack the common sense to buy wire and cable, so there are always some mistakes in purchasing. The most common phenomena are as follows:
Misunderstanding one, only figure cheap, don't ask the wire source
Our existing cable tens of thousands of enterprises, different manufacturers, different materials, different labor and cost of transportation and management, even lead to the same specifications of the wire, there will be some differences in price.
As we all know, because the safety of wire and cable is related to the safety of people's lives and property, the state is extremely strict in checking the wires and cables. A meet the national standard of wire and cable enterprises in the production, often after screening material, production process, safety factor, quality testing and other aspects, as well as related to the contents of the application and approval, it will directly increase the cost of wire and cable.
This is why regular manufacturers tend to have higher prices for products than non regular manufacturers. If only for cheap prices, and the purchase of those non regular manufacturers of wires and even shoddy products, then it will inevitably cause security problems for home power.
Misunderstanding two, just look at the wire appearance, do not look at the wire specifications
Different electrical appliances, different environment, the specifications of the wires have different requirements. For example, a user needs to buy a power cord for an electric welder on the 380V. The current required by the welder is 16. If we use the household common wire, then obviously can not carry such a large current, it is difficult to meet the requirements of safe use of electricity.
Because of the increase of voltage and current, it is necessary to put forward higher requirements for the bearing capacity of wires and cables as well as many parameters such as conductivity. If the direct use of ordinary wire, it is likely to cause short circuit, the machine burned, serious will cause excessive losses in the home and other.
Again, often in a high temperature environment in the wire, you can not even use a thick rubber covered wire. But to choose fire-resistant flame retardant wire, in order to avoid the sheath burning caused by short-circuit problems.
Therefore, in the purchase of electricity, must take into account its electric current and voltage requirements and working environment, and consulting professionals and cable vendors, select the appropriate specifications of products, in order to avoid production and economic losses.
Misunderstanding three, only figure convenient convenience, regardless of the relevant factors
Sources, specifications, prices, and appearance are the basic elements that should be taken into consideration when buying wires. But in the wire sales, often see some people buy wire is very optional, often choose a kind of, buy go, and even prices, specifications, appearance are not asked.
In these people, some because of busy work, no time to choose; some because a lot of things, no mood selection; sometimes buy wire less, feel no need to choose; and simply because of careless, didn't consider picking.
Now on the market of wire quality varies greatly, specifications vary, before buying should ask a clear, pick a careful, must not covet for a while convenience, save trouble, otherwise the consequences will be unimaginable.