I see a lot of lights are installed in the green belt on the side of the road, buried when the armored cable is also used without armor. I would like to ask if the water in the green belt does not affect the insulation of the cable should choose what type of cable. What circumstances to use armor what circumstances do not armor. YJV.VV and other models of the power cable can be waterproof or moisture it? Please understand the master who speak, thank you. More
First, the choice of wire and cable models When using wire and cable, to consider the use, laying conditions and safety; For example, depending on the use of different power cables, overhead insulated cables, control cables, etc .; depending on the laying of different conditions, General plastic insulated cable, steel armored cable, steel armored cable, anti-corrosion cable, etc .; according to safety requirements, can choose non-flame retardant cable, flame retardant cable, halogen-free flame retardant cable, fire-resistant cable. Second, the choice of wire and cable specifications to determine the use of wire and cable specifications (conductor cross-section), the general should consider the heat, voltage loss, economic current density, mechanical strength and other selection conditions. According to experience, low-voltage power line because of its large load current, it is generally selected according to the heat conditions, cross-section, and then check the voltage loss and mechanical strength; low-voltage lighting line because of its higher voltage level, the first voltage loss conditions Select the cross-section, and then check the heat conditions and mechanical strength; for high-voltage lines, the first by the economic current density selection section, and then check the heat conditions and allow the voltage loss; and high-voltage overhead lines, but also check its mechanical strength. If the user has no experience, should consult the relevant professional units or people's views.
You use YJV on the line, but to use PVC pipe to protect the buried
Armor: Reduces the damage to the cable by external forces. YJV and vv, in the temperature requirements on the yjv better than vv, to waterproof, or choose waterproof cable
The best choice for armored cable! You say YJV and VV are not, it is best to use VV22 or YJV22 armored cable, to ensure a longer life
