What is power wiring and control wiring and how are they different?

What is a control wiring?

The major purpose of a control wiring is to transfer information or to do the communication in an electrical system. The control wiring can be seen in heating and air condition system, low voltage control systems are used for residential and commercial applications. Line voltage control system is used in large commercial and industrial applications. Special control systems such as electric, pneumatic and electronic control systems are used to control large industrial systems. By using the control wiring we can regulate, or control a device in an electrical system.

What is power wiring and how is it different from control wiring?

We use the power wiring to do the power transfer if we look at the power distribution panel in any industry then we can see the power wiring and control wiring. We can see an incoming bus bar and the power will be connected to MCCB and it is then distributed so all these wiring is power wiring. In the same panel we could see a multifunction meter it is a control wiring. An example for this would be PLC control panel and we can see both the power wiring and control wiring in this but the control wiring will be more in this, in the PLC control panel the power wiring starts from the incoming and an MCB will be connected to this after that it would be converted into a 24V DC and it will be connected to a PLC and then the input and output of the PLC connection is done by control wiring. We use high gauge wires for power wiring but in case of control wiring we use wires with low gauges. The connection of the field device from the control system or the sensor wiring is all control wiring and the cables we used for this would be shielded cables. The power cables have very less core when compared to a control cable. The PLC input wiring will be composed of many feedback from sensors and other field device and all these wiring will be control wiring.


post-graduate in Electronics & communication.

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