Wiring Diagram Icons

By | November 10, 2021



A Comprehensive Guide to Wiring Diagram Icons



Understanding how to read wiring diagrams is a crucial skill for anyone working in the electrical or electronics industry. These diagrams use universal symbols to represent various components and demonstrate how they are connected together. Commonly used icons are universal, but some manufacturers may add their own unique symbols to the diagram. To understand circuits and troubleshoot problems, it is important to know what all symbols mean, so let's take a look at some wiring diagram icons.

Wiring Diagram Symbols



Electricians and technicians use wiring diagrams to pinpoint which parts of a circuit are connected and identify hard-to-find malfunctions. The diagrams also tell what materials and components are needed for the construction of an electrical system. Universal symbols set by international standards represent the common components used in these diagrams. The symbol represents the component even if its physical form varies from manufacturer to manufacturer.

Common Electrical Symbols



Some of the most commonly used symbols represent the following components:


  • Battery: a device that stores energy and is connected to the terminals of the power source such as a battery, solar panel or generator.

  • Resistor: a component that limits current in a circuit.

  • Switch: a component that can be opened or closed to allow or block the flow of current.

  • Light Bulb: a device that converts electricity into visible light.

  • Capacitor: a component that stores electric charge and can be discharged when required.

  • Fuse: a component that is designed to prevent an excessive current from passing through a circuit.

  • Inductor: a component whose resistance to current changes with frequency.

  • Transformer: a component used to reduce or increase voltage in a circuit.



Custom Electrical Symbols



In addition to the common symbols used in wiring diagrams, some manufacturers may also add their own symbols to represent specific components. These symbols are often used to identify products by brand. When dealing with a product made by a specific manufacturer, it is important to pay attention to any unique symbols that may appear on the diagram in order to properly identify the components.

Conclusion



Reading a wiring diagram can be intimidating for even the most experienced electricians, but having an understanding of the symbols can make the job a lot easier. Learning the universal symbols used in wiring diagrams is the first step to being able to properly interpret them. After that, any additional symbols provided by the manufacturer must also be understood. With this knowledge, you should be well-equipped to read any wiring diagram!


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