Which method of using electricity is considered unsafe?

Handling electrical equipment around water is considered unsafe due to the high risk of electrical shock. Water is a good conductor of electricity, which means that if electrical equipment comes into contact with water or is used in a wet environment, it can create a pathway for electric current to flow through a person's body. This can lead to severe injuries or even fatal incidents.

In contrast, using insulated tools provides a protective barrier against electric shock, ensuring that users do not come into direct contact with electricity. Ensuring that hands are dry while using electrical devices further minimizes the risk of shock, as moisture can increase conductivity. Additionally, using low wattage devices typically means that they consume less power, which reduces the risk of overheating and electrical hazards. Thus, handling electrical equipment near water remains the most dangerous practice in the given options.