The ul wire is the same as other wires. It is mainly used in various electrical lighting circuits, etc., but the quality problem seriously affects the usage. Therefore, as a consumer, you cannot buy cheap u electricity for a short time.
Wire, and then cause a catastrophe, let me tell you how to distinguish the quality of the u wire.
1. The inner core thickness GB has certain requirements, but it is not very strict, but it is not much worse, but there are errors that cannot be seen with the naked eye.
2. Look at the inner core, the higher the brightness of the material (copper) of the inner core, the better the copper, and its luminosity is uniform, shiny, and does not have a sense of hierarchy. The standard requires the inner core - oxygen-free copper must be used, non-standard enterprise products such as black rod copper can be
It can develop hidden dangers of safety accidents.
3. Looking at the packaging, the national standard wire is often better, neat, and has a sense of quality in the hand.
4. Check the length: There is no mandatory requirement that the unit must be metered when going online. Many manufacturers in the market will use the unit meter, but the unit meter is not necessarily the standard.
5. In case of fire, it can be closed within 5 seconds after wiring, and there will be flame retardant function, which is the national wire mask.
6. It is stipulated that the distance on the wire must be marked at regular intervals. The relevant enterprise logo will probably not be affected by the distance exceeding 500mm. The above analysis of the logo generally includes the product's trademark, manufacturer's name, and the implementation of the national standard.
Wait.
Activate Windows
7. Open the appearance of the package inside the metal wire. The GB 1.5-6 square wire requires a shell thickness of 0.7 mm (refer to the insulation thickness). If the non-standard is too thick, the corresponding inner core will definitely not be enough, as long as the tensile force is in the sheath. . ,Knowledge.
Go to Settings "Secondary Activation Window
- Generally speaking, it is not easy to tear to reach the standard line.
