Electricity theft is a common problem. Due to electricity theft, not only there are losses to the revenue of the government but over loading and damage to the transformers is an unwanted consequence of the theft as well.
The project demonstrated here is to show the mechanism of electricity anti-theft system. A pack of parallel connected bulbs is used as load while the programmable circuit operating the supply controlling relay is based on Arduino. The principle used behind detecting overloading is voltage comparison and an additional buzzer circuit is attached to the project to alert electricity theft in the locality. The buzzer mechanism has been added to alert people of electricity theft and demoralize the mischievous elements.