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What is the importance of using an electrical schematic diagram?

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An electrical schematic diagram provides electrical engineers with an idea of how a circuit layout should look when it is completed, and it also aids in planning repairs. For example, looking at an electrical schematic diagram for a circuit board indicates where wires connect between components of the system.

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On a larger scale, electrical schematics help plans for wiring buildings. For safety, circuits can only carry a given amount of current. For example, if a light circuit carries 10 amperes, that information appears on the schematics. Referring to the diagram during construction reduces the likelihood of potentially dangerous wiring mistakes.

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