What is the role of insulated tools in electrical work?

Insulated tools play a crucial role in electrical work primarily by preventing electric shock. These tools are designed with protective insulation that covers the metal parts, which are conductive. This insulation acts as a barrier between the user and any live electrical components, significantly reducing the risk of electric shock when the tools come into contact with electrified circuits or equipment.

When a technician uses insulated tools, they can perform their tasks with a higher degree of safety, knowing that even if they inadvertently touch a live wire, the insulation will help protect them from the electrical current. This is especially important in environments where high voltages are present, making the use of such tools essential for adhering to safety regulations and best practices in electrical work.

The other options do not capture the primary purpose of insulated tools. Increasing voltage is not a function of insulated tools; rather, they serve to protect against it. While repair of circuit boards may sometimes be necessary, that task is not a direct correlation with the use of insulated tools. Enhancing conductivity is also incorrect since insulated tools are non-conductive, specifically designed to prevent the flow of electricity through the tool to the user. Thus, the essential function of insulated tools lies in their ability to safeguard against electric shock.