When using electric power tools, what type of cord should be used?

Using a 3-wire cord with ground is essential when operating electric power tools to ensure maximum safety. This type of cord includes a ground wire that provides a path for electrical current to dissipate safely into the ground in the event of a fault. This significantly reduces the risk of electric shock, as the ground wire helps to prevent dangerous voltage from reaching the operator if there is a short circuit.

In contrast, a two-wire cord without a ground lacks this additional safety feature, making it less reliable for power tools that can draw significant electrical current. Relying solely on extension cords, which may vary in quality and capability, does not ensure safe operation of tools that require consistent and safe electrical supply. Using any type of cord is far too broad and does not guarantee safety or compliance with electrical standards. Thus, the use of a 3-wire cord with ground is the best practice when utilizing electric power tools, as it enhances user safety and complies with safety regulations.