How much electricity does a 20 square meter high voltage advertising lamp cost per hour?

The maximum power consumption of outdoor LED display (full color) is about 800W/square. That is to say, when this outdoor LED display reaches the maximum power (peak value) at every moment, the power consumption per square meter per hour will be 0.8 kilowatt-hours.
The maximum power of each single red board is 25w. If 16 boards are considered as one square meter, the power consumption is 150-200W.

A 28-watt light bulb can use 0.672 kilowatt-hours of electricity in 24 hours a day. According to the formula W=Pt, where W repre sents watts, P repre sents power, and t repre sents time. When the electrical appliance works normally for a day, the electric power is 0.028kw and the time is 24 hours. Therefore, a 28-watt light bulb requires a maximum of 0.672 kilowatt-hours of electricity 24 hours a day.

How many square meters is a 28-watt LED light suitable for?

Suitable for 14-19 square meters. Because the power of household lighting is about 1.5 watts to 3 watts per square meter, the light efficiency of LED lights is relatively high, about 1.5 watts to 2 watts per square meter. Based on the above data, a 28-watt LED light can illuminate 14-19 square meters.

　How many kilowatt-hours of electricity does a 28-watt light bulb produce in one hour?

　A 28-watt light bulb produces 0.028 kilowatt-hours of electricity in one hour. According to the fact that one kilowatt hour of electricity is equal to 1 kilowatt hour, it can be concluded that a 28-watt light bulb consumes 0.028 kilowatt hours of electricity per hour.