What do wires labeled "L" on a schematic primarily carry?

Wires labeled "L" on a schematic primarily carry power from the source. In electrical schematics, the designation "L" often signifies a line that is intended to deliver voltage or power to various components in a circuit. This is a standard convention used in schematics to differentiate power lines from other types of signals.

Understanding this designation helps to properly interpret the schematic, ensuring that one knows which wires are responsible for providing the necessary energy for components to function. Recognizing this makes it clear that "L" should be associated with power delivery rather than ground, data, or control signals, which are indicated by different symbols or labeling conventions in schematics.