LED guardrail tubes are low pressure for safety and quality reasons. This requires the LED guardrail tube to be connected to the corresponding drive power supply in order to work properly. Calculate the number of power supplies before purchasing and installing the LED guardrail tube. Since the LED guardrail tube is an outdoor lighting fixture, the choice of the power source is at least a rainproof power supply, and a higher waterproof power supply. LED guardrail tube power supply calculation To calculate the number of power supplies, calculate the number of guardrail tubes that each power transformer can carry, based on the power of the transformer and the power of the guardrail lamp. Generally, only 80% to 70% of the power is used. For example, with a 400W waterproof transformer, the maximum power of the LED guardrail tube is 12W per meter, which can theoretically be connected to 30 meters. In fact, we actually connect the switching power supply to one main line, and each of them is connected in series and is connected to the main line. If the top line is connected to the upper side of the tube, it can be connected with 10 meters in series. Regardless of the power supply, the single-series series tube should not exceed 6 meters; the power line above the lamp board is fixed. The more pressure drop the belt has, the less the rear is less than 24V. So the brightness of the rear LED guardrail tube The lower. China leading manufacturers and suppliers of Smart Solar Street Light,Solar Street Lighting System, and we are specialize in Integrated Solar Street Light,All In One Solar Street Light, etc. Solar Street Light Smart Solar Street Light,Solar Street Lighting System,Integrated Solar Street Light,All In One Solar Street Light Jiangmen Liangtu Photoelectric Technology Co., Ltd. , https://www.liangtulight.com