Types of loads connected directly to L2 in a line diagram include:

In a line diagram, loads refer to devices or components that consume power. When considering which types of loads connect directly to L2, control relay coils and alarms are significant examples. Control relay coils often function by receiving voltage from L2 to help control various circuits. Alarms, particularly those that alert users to faults or system statuses, also rely on receiving power from this line to operate.

The choice of control relay coils and alarms reflects the actual functioning of electrical systems, where these devices are frequently activated through connections to voltage lines such as L2. They are essential for automation and safety within the electrical framework, embodying the types of loads that actively use the power supplied to them.

Conversely, other options do not correctly represent loads connected directly to L2. Power supplies and transformers are generally not considered loads in the same sense; rather, they are components that manage or convert electrical power. Switches typically control circuits but do not consume power themselves. Wires and terminals, while essential for connectivity, do not represent loads—they simply facilitate the flow of power to the actual devices that do consume it. This distinction is crucial in understanding the function and role of various components in electrical diagrams.