Drawings and Plans Flashcards draft****

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Circuit diagrams

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A circuit diagram is the representation of a circuit arrangement that permits easier understanding of how the circuit works. In practice, the actual wiring may be different to the circuit diagram. An example of a circuit diagram is shown below:

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Wiring Diagram

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Wiring diagrams

A wiring diagram shows how a circuit is actually wired in practice. This may result in a diagram that makes it harder to understand how the circuit functions. An example wiring diagram is shown below:

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Block diagrams

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Block diagrams

A block diagram does not show individual conductors or cables but the sequence of equipment instead. For example, the diagram below shows the supply sequence to an installation:

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Schematic diagrams

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Schematic diagrams

These are very similar to circuit diagrams in that they show how a system works rather than how it is wired. They are generally used on larger control systems, as they can make fault-finding much simpler. An example is shown below:

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Bar Charts

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Bar charts

Bar charts can be used for many purposes, but the most common use is in planning the sequence of works; this can be represented graphically by bar charts, as shown below: