Street Light Wattage Calculation

Street Light Wattage Calculation

When it comes to choosing the right wattage for street lights, it’s important to consider a few key factors. The wattage of a street light determines how bright it will be and how much energy it will consume. By calculating the wattage needed for your street lights, you can ensure that you have the right amount of light to keep your streets safe and well-lit.

Factors to Consider When Calculating Wattage

There are several factors to consider when calculating the wattage needed for street lights. These include:

Street Light Wattage Calculation

  • Size of the area to be illuminated
  • Height of the light fixtures
  • Intensity of the light required
  • Spacing between the light fixtures

By taking these factors into account, you can determine the appropriate wattage for your street lights.

Calculating Wattage

The wattage needed for street lights can be calculated using the following formula:

Watts = Area to be illuminated (in square feet) x Intensity of light (in footcandles) x Maintenance Factor / Uniformity Factor

The maintenance factor takes into account the reduction in light output over time, while the uniformity factor considers how evenly the light is distributed across the area. By including these factors in your calculation, you can ensure that your street lights provide sufficient illumination over time.

Example Calculation

Let’s say you have an area of 100 square feet that needs to be illuminated with an intensity of 10 footcandles. If your maintenance factor is 0.9 and your uniformity factor is 0.7, the wattage needed for your street lights would be:

Watts = 100 x 10 x 0.9 / 0.7 = 128.57 watts

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Therefore, you would need a street light with a wattage of at least 129 watts to properly illuminate the area.

Choosing the Right Wattage

When choosing the wattage for your street lights, it’s important to consider factors such as energy efficiency, light output, and maintenance costs. Higher wattage lights may provide more illumination, but they also consume more energy and may require more frequent maintenance.

By carefully calculating the wattage needed for your street lights, you can strike the right balance between energy efficiency and sufficient illumination. This can help you save on energy costs while ensuring that your streets are well-lit and safe for pedestrians and drivers.

Conclusion

Calculating the wattage needed for street lights is an important step in ensuring that your streets are properly illuminated. By considering factors such as area size, light intensity, and maintenance needs, you can determine the appropriate wattage for your street lights. This can help you save on energy costs and provide a safe and well-lit environment for your community.