Selection and Protection of Outdoor Wires

In daily life, the wires are more or less pulled outdoors and used outdoors, just like the lights on the balcony or some machines that are often used outside.

For the average family, it is enough to use a single-strand copper core wire of 1.5 square meters, of course, this is not only suitable for basic lighting! If the lighting stadium of the big family or the farmers need to connect some machines, they may need more. For example, the wires used in factory decoration often use BV wires. BV is copper core PVC insulated wires, and the temperature is 70°C for a long time. ℃, not lower than the temperature of -10℃, the voltage level is 450/750 V, it can be fixed indoors or outdoors, and it can be exposed or hidden. The actual situation still depends on the electrical appliance to analyze. If it needs to be erected, the suspension span of both ends of the wire should not exceed about 30 meters, and the two ends are fixed with a ceramic cable frame.

BX--copper core rubber insulated wire, the operating temperature is not higher than 70 ℃, and it is applied indoors.

RV--polyvinyl chloride insulated single-core flexible wire, the operating temperature should not exceed ℃, the operating temperature should not be lower than -10 ℃, the voltage level is 450/750V, and it is used for the internal wiring of instruments and equipment.

RVV--Copper core PVC insulated and sheathed flexible wire, the operating temperature does not exceed 70 ℃, the voltage level is 300/500, and it is used for wet, high mechanical protection requirements, often moving and twisting occasions.

Outdoor wiring is required to be more efficient and safe. It also depends on whether it is used for lighting or power supply, and whether it is single-phase or three-phase. There should be a ground wire. Use wire ducts or wire pipes for maintenance. If it is very wet, it will be better to use wire pipes. Pay attention to keeping the wires away from objects such as heat sources and water sources as much as possible.