1. Lighting scene: If it is an outdoor scene with large lighting or an indoor scene with large area, you need to choose a higher wattage, such as more than 50 watts, to achieve better lighting effect. If the lighting area is small, such as bedrooms and balconies, 10-30W LED lights are enough.
2. Illumination intensity: If strong illumination is needed, choose an LED lamp with 40 watts or more, and its illumination intensity is about 400 lumens or more, which can meet most common lighting scenes. If you want to illuminate the area with less bright light, the LED lamp with 15-30 watts is more energy-saving.
3. Energy considerations: The power consumption of LED lamps is determined by its wattage. The higher the wattage, the greater the power consumption and the higher the energy consumption. So if you want to choose an LED lamp that can meet the basic lighting needs and save energy, 15-30 watts will be a better choice.
4.LED components and heat dissipation conditions: Generally speaking, the volume and heat dissipation requirements of LED lamps will increase with the increase of their wattage. High-power LED needs larger heat dissipation area and better heat dissipation conditions to prevent overheating from affecting its service life. Therefore, it is also necessary to consider the installation location and environment to select the appropriate wattage.
To sum up, it is more energy-saving and practical to choose 15-30 watt LED lamp for general household lighting. You can choose LED lamps with 30-50 watts or more outdoors or in places where high illumination is needed. As for the high-power LED lamp with power above100W, it is more suitable for lighting in industrial and mining enterprises, stadiums, billboards and other occasions. When choosing LED lamps, we can consider the actual use scenarios and needs, and make a more balanced choice between power saving and light intensity, which will be the most economical and practical scheme.