There are many power cords in the world, but power cords around the world are very different. Take the power cords in Europe and America for replica Rolex watches, there are many different places. For example, the United States uses 110V low voltage. While Europe uses 220V high voltage, the wires used in the United States have thicker copper cross-sections than ordinary wires, because American products have lower voltage and higher current than European products, and require stricter copper cross-sections.

For example: H05V-U is a European harmonized (consistent meaning) standard wire, the meaning of H is the meaning of the first letter of the English character of the European unified model, 05 means 300/500V, and only one V means the insulation is PVC Material (70 degrees), if there are two Vs, the sheath material is PVC.-It has no meaning, U means single-strand conductor, in English, it is solid. As for SJT, it is the American wire specification with UL62 as the standard, SJ =Service Junior means small service, T=Thermoplastic means thermoplastic. That is to say, this line is not a separate wire, but a small cable that "services" other electrical products.

As for the square number and wire specifications, the general European standards, including Chinese standards, the specifications of the wire are usually expressed in specifications such as 0.5...751.01.52.54610, even if it exceeds, it only refers to the smaller specification, and of course there are other The square number is very small. In North America, the conductor is usually expressed in AWG specifications. 18AWG is just 0.84MM^2. According to the UL62-2006 version of the standard, 18AWG/3C wire, single The core wire should be 0.824 square millimeters. American wires are expressed in AWG. Only European wires will be recorded by square. European standards and American standards, the two systems are different, and the way of checking is also very different. Most of the national standards are similar to the European standards.

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