Which type of equipment is known to commonly include ground fault protection features?

Ground fault protection is a safety feature designed to prevent electrical shocks by interrupting the flow of electricity when a ground fault is detected. This feature is particularly important in environments where tools and equipment may come into contact with moisture or conductive materials, which increases the risk of electrical shock.

Outdoor power tools typically include ground fault protection because they are often used in environments where they might be exposed to water, such as rain or wet ground. This added protection helps ensure the safety of the user by reducing the likelihood of serious electrical incidents in potentially hazardous conditions.

In contrast, while light switches, extension cords, and surge protectors may have other safety features, they do not generally incorporate ground fault protection as a standard feature, especially in the way outdoor power tools do. Thus, outdoor power tools stand out as the most relevant category that commonly includes this protective feature.