Differentiate between power and control wiring

Differentiate between power and control wiring
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1 Answer

Answer :


Power wiring
Control wiring
1 Used for connecting load to main power supply through appropriate switchgear and protecting devices such as overload relay contacts
Used for connecting control circuit which consists of input devices such as push buttons, selector switches, proximity switches, indicating lamps etc.
2 Power wiring is connected between main supply and load.
Control wiring is connected at the secondary of a control transformer.
3 It is at main supply voltage level (e.g. 440V)
It’s a low voltage (e.g. 110VAC)
4 A conductor selections for power wiring is based on rating of load and overload capacity.
A conductor with small current capacity can be used for connecting control circuit as control circuit does not carry higher current.
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