What is a common safety measure when working near live electrical circuits?

Using non-conductive tools and wearing insulated gloves is essential for ensuring safety when working near live electrical circuits. This practice minimizes the risk of electrical shock or electrocution. Insulated gloves provide a barrier between the electrician and the electrical current, which is crucial when handling live wires or equipment. Non-conductive tools, such as those made with rubber or plastic components, further reduce the risk of completing an electrical circuit unintentionally, thereby protecting the worker from potential harm.

In contrast, the use of any gloves does not guarantee safety, as not all gloves are designed to insulate against electrical current. Wearing a helmet may protect against head injuries, but it does not address electrical hazards specifically. Using metal tools can pose significant risks since metal is a good conductor of electricity and can easily lead to serious accidents if it comes into contact with live circuits. Thus, the combination of non-conductive tools and insulated gloves is the most effective safety measure in such scenarios.