In blueprints, what does the abbreviation "SW" typically mean?

The abbreviation "SW" in blueprints typically stands for "Switch." This is commonly used in electrical schematics and plans to indicate the presence of a switch that controls a circuit or a lighting fixture. Understanding this designation is essential for interpreting wiring diagrams, as switches play a critical role in the operation of electrical systems by allowing for control over the flow of electricity.

In electrical blueprints, clarity in abbreviations enhances communication about system design, so knowing that "SW" represents a switch helps electricians and other professionals quickly identify key components within the plan. This knowledge is particularly important when planning installations or troubleshooting existing systems.