How many watts does a street light use?
Now the solar led street light source uses led lamp beads, the number of led watts is different from the traditional high-pressure sodium lamp wattage, such as high-pressure sodium lamp 100w, equivalent to led36w, 150w equivalent to led60w and so on. Commonly used led wattages are: 5w, 10w, 15w, 20w, 30w, 40w, 50w, 60w, 80w, 100w, 120w, of which 60w or less is for ordinary LED lighting, 60w or more for mirror or lens.
A high-pressure sodium street light can draw up to 1000 watts, and an incandescent light used in the 1900s needed 320 watts. Some LED street lights require only 73 watts and, according to the U. S. Department of Energy, produce a higher quality of light.
Fluorescent bulbs were used in street lights from the 1950s to the 1970s, but because of their low reliability and size, they gave way to high-pressure sodium lights rated at 250 watts. A metal halide street light draws 400 watts and gives true, white light. Mercury vapor lights also appeared in the 1950s, with 100-watt bulbs used in street lights, but were banned in 2008.
Solar street light wattage selection is generally selected according to road width and pole height, or according to road lighting standards, the following small series will be analyzed.
The wattage corresponds to the pole height and road width:
1,10w, suitable for pole height 2.5m-3m
2, 15w, suitable for pole height 3m-4m
3, 20w, suitable for pole height 5m-6m (5m suitable for road width 6-8m, 6m suitable for road width 8-10m, 2 lanes)
4, 30w, suitable for pole height 6m-7m (suitable for road width 8-10m, 2 lanes)
5, 40w, suitable for pole height 6m-7m (suitable for road width 8-10m, 2 lanes)
6, 50w, suitable for pole height 6m-7m (suitable for road width 8-10m, 2 lanes)
7, 60w, suitable for pole height 7m-8m (suitable for road width 10-15m, 3 lanes)
8, 80w, suitable for pole height 8 meters (suitable for road width 10-15m, 3 lanes)
9, 100w and 120w, suitable for pole heights above 10-12 meters
Lighting standard of LED street light
We refer to the high-pressure sodium lamp lighting standard, led street lamp as a new product that has just emerged in recent years, the country has not yet introduced any standards. According to the “Urban Road Lighting Design Standards”: the average illuminance of the expressway is 20lx, the uniformity is 0.4, the average illuminance of the main road is 15lx, the uniformity is 0.35, the average illuminance of the secondary trunk is 8lx, the uniformity is 0.35, the average illumination of the branch is 5lx, uniformity 0.3.