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The use of poor-quality solar cables may cause safety hazards such as damage to electrical equipment routes, power failures, and fire accidents. Here are 5 ways to identify the quality of solar cables:
1. Fire roasting
Solar photovoltaic cables generally use XLPE flame-retardant materials, which are not easy to burn after being ignited by fire, and have no irritating odor. However, poor-quality cables will ignite quickly if they are roasted with fire, resulting in fire and smoke.
2. Packaging
Good quality solar cables have been signed on the surface of the insulation layer, such as cable specifications, model specifications, 3C verification, etc., and the printing is clear, and they are generally not clean with water. There is a certificate of conformity in the electromagnetic coil, and the certificate has the detailed address of the manufacturer, 3C mark, quality management system certification, working voltage, cable specifications, and models. The poor quality cables have no or lack of markings.
3. Copper quality
The higher the gloss of copper, the better the copper, and the brightness is uniform, glossy, and has no texture. The copper core of the copper core wire that meets the standard should be dark purple, shiny, and soft to the touch. How to cut off a small piece of plastic skin, carefully observe the copper wire inside, lightly press the top of the copper wire with the palm of your hand, it should be flat and painless, and the touch is soft. The inferior copper core cable copper core is purple-black, dark, or purple, with a lot of residues, poor toughness, and poor ductility. And there are often disconnections in the cable. You can peel off 2cm of the cable at one end, and then rub a piece of white paper on the copper core slightly. If there are gray-black chemicals on the thin paper, it indicates that there are more residues in the copper core. In addition, fake and inferior cables and cable sheaths seem to be very strong. In fact, most of them are made of recycled particles. Over time, the cable sheath will become brittle and lose electricity.
5. Length
It is not mandatory to mark the rice mark, but many manufacturers have also marked the rice mark. The wire that has been marked is not necessarily the national standard wire, but the general national standard wire must be marked with the rice mark.
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