What type of structure is temporarily used to protect against a conductor accidentally dropped onto a power line or over roads?

A guard structure is specifically designed to provide a protective barrier in the event that a conductor accidentally drops onto a power line or across roadways. Its primary function is to prevent contact with live conductors, minimizing the risk of electrocution for both linemen working in the area and the general public.

Guard structures can take various forms, often including protective equipment and physical barriers that ensure electrical safety during maintenance and installation work. This makes them essential for safeguarding the integrity of the electrical system while also providing safety measures for anyone in the vicinity.

Other options, while related to lineman work, do not serve the same protective purpose. For example, a saddle supports conductors in a stable position but does not act as a barrier against accidental drops. A link stick is a tool used for connecting conductors and is not intended for protective purposes. Lastly, a blade and prong are elements typically involved in making electrical connections rather than providing safety from accidental conductor drops. Thus, the guard structure is clearly the appropriate choice for this specific safety function.