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• Creation date n 18 September, 2022
• Last updated 18 September, 2022

PLC drawing for electrical and instrumentation drawings

In an industrial environment, a plc is not just "plugged into a power outlet". The electrical design of each machine must include at least the following components. transformers - to reduce ac supply voltages to lower levels power contacts - to manually enable/disable power to the machine with emergency stop buttons terminals - to connect fuse or circuit breaker devices - will cause power failure if taken too much current to ground - to provide a path for current to flow when there is an electrical fault box - to protect equipment; and users by accidental contact

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