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    Why power and control wirings run in separate raceways?
    Question

    Why power and control wirings run in separate raceways?

    A.

    To reduce heat

    B.

    To prevent the signal interference

    C.

    To increase the insulation resistance

    D.

    To increase the current carrying capacity

    E.

    To reduce the voltage

    Correct option is B

    The correct answer is (B) To prevent the signal interference.

    • Power and control wiring are run in separate raceways primarily to prevent signal interference. Power cables carry high voltage and current, which can generate electromagnetic interference (EMI) that may disrupt sensitive control circuits, especially in low-voltage signal lines.

    • Keeping them separate ensures that signal integrity is maintained for control systems, sensors, and communication circuits.

    Information Booster:

    • Electromagnetic interference (EMI) can cause malfunctions in equipment such as PLCs (Programmable Logic Controllers), sensors, and other electronic control devices.

    • By separating power and control wires, the risk of induced currents and signal noise is minimized.

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