What are the sheet metal troughs used for in electrical installation?

In electrical installations, sheet metal troughs serve primarily as housing and protection for electrical wires and cables. They are designed to organize, shield, and secure electrical conductors, ensuring that they are kept safe from physical damage, exposure to environmental elements, and accidental contact. This protective function is crucial in maintaining both safety and performance in electrical systems.

By using sheet metal troughs, installers can create a structured and efficient path for wiring, minimizing the risk of mechanical interference and electrical hazards. These troughs can also facilitate easier access to wires for maintenance or upgrades. The design and construction of these troughs adhere to electrical codes and standards, making them an essential component in ensuring compliance and safety in electrical installations.

Other options, such as transporting liquids or storing tools, do not align with the primary purpose of sheet metal troughs in electrical work since they are specifically engineered for managing electrical conductors. Providing a ground connection is a separate aspect of electrical installation and does not pertain directly to the purpose of troughs, reinforcing the selected answer's accuracy.