SCHEMATIC

 Electrical schematic wiring diagrams are diagrams that show the components and connections of an electrical circuit using standardized symbols and lines. They are used to represent the logic and function of an electrical circuit, without showing the physical layout of the wires and devices. Electrical schematic wiring diagrams can help to design, troubleshoot, and repair electrical systems.

There are different types of electrical schematic wiring diagrams, such as:

Wiring diagrams: 

These show the actual connection points for the wires to the components and terminals of the circuit. They show the relative location of the components and how they are wired together. For example, Figure 1 shows a wiring diagram for a three-way switch circuit.

Pictorial diagrams:

These show how the components are related to each other in the same circuit, but do not show the details of the wiring connections. They use drawings or pictures of the components instead of symbols. For example, Figure 2 shows a pictorial diagram for a simple lamp circuit.

Schematic diagrams:

These show the logic and function of the circuit using symbols and lines. They do not show the physical relationships or locations of the components. They use standard symbols to represent the components and lines to represent the wires. For example, Figure 3 shows a schematic diagram for a series-parallel circuit.
Electrical schematic wiring diagrams are subject to various standards and codes that specify the rules and conventions for creating and interpreting them. Some of the common standards and codes are:

IEC 60617: This is an international standard that contains graphical symbols for use in electrotechnical diagrams. It covers symbols for components, devices, functions, and systems. It also provides a database of symbols and metadata that can be accessed online.

ANSI/IEEE Std 315: This is an American national standard that defines graphic symbols for electrical and electronics diagrams. It covers symbols for quantities, units, components, devices, and functions. It also provides a standard method for identifying reference designations.

BS 3939: This is a British standard that specifies graphical symbols for electrical power, telecommunications, and electronics diagrams. It covers symbols for components, devices, circuits, and systems. It also provides a classification scheme for graphical symbols.

DIN 40700 to 40717: These are German standards that define graphical symbols for electrical engineering diagrams. They cover symbols for components, devices, functions, systems, and quantities. They also provide rules for the application of graphical symbols

To create an electrical schematic wiring diagram, you need to follow these steps:


  • Define the scope and purpose of the diagram: You need to determine what kind of circuit or system you want to represent, what level of detail you want to show, and what information you want to convey. You also need to consider the intended audience and use of the diagram, and the standards and codes that apply to your project.
  • Gather the necessary data and materials: You need to collect the specifications, datasheets, manuals, and other documents that describe the components, devices, functions, and systems in your circuit or system. You also need to obtain the symbols, templates, tools, and software that you will use to create the diagram.
  • Draw the basic layout and structure of the diagram: You need to sketch the outline of the diagram using a grid or a scale. You need to arrange the symbols for the components and devices according to their logical or functional relationships. You need to use lines to represent the wires and connections between the symbols. You need to use labels, notes, legends, and other annotations to provide additional information about the diagram.
  • Refine and verify the diagram: You need to check the accuracy, completeness, clarity, and consistency of the diagram. You need to make sure that the diagram follows the rules and conventions of the standards and codes that apply to your project. You need to correct any errors or inconsistencies that you find. You need to test and simulate the diagram if possible to ensure that it works as intended.
  • Save, print, and share the diagram: You need to save the diagram in a suitable format and location. You need to print or export the diagram if you want to have a hard copy or a digital copy. You need to share the diagram with your colleagues, clients, or stakeholders if you want to get feedback or approval.








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