Double insulated tools are characterized by what main feature?

Double insulated tools are designed with a main feature of being insulated from electrical energy. This characteristic is pivotal as it enhances the safety of the tool's operation. Double insulation involves an additional layer of insulation beyond the standard single insulation, which reduces the risk of electric shock to the user. This is particularly important in environments where tools may come into contact with moisture or conductive materials.

The design ensures that even if the primary insulation were to fail, the secondary insulation would still provide adequate protection, thereby minimizing the risk of electrical accidents. This concept is critical for any electrician or worker who regularly uses powered tools, as it aligns with safety standards and regulations aimed at protecting users from electrical hazards.

While features like shock resistance, a rubberized grip, or being lightweight may contribute to overall user experience and comfort, they do not encapsulate the defining principle of double insulated tools as succinctly as insulation from electrical energy does. This fundamental safety feature is why double insulated tools are commonly preferred in various working conditions.