To prevent damage from environmental electrical discharges, PLCs must be properly ______.

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Multiple Choice

To prevent damage from environmental electrical discharges, PLCs must be properly ______.

Explanation:
Environmental discharges inject unwanted voltages into control gear, so giving the PLC a solid path to earth keeps its chassis and I/O at a safe reference potential. Proper grounding provides a low-impedance route for stray currents, which minimizes voltage spikes that could damage the PLC’s electronics. Bonding and shielding help reduce potential differences and noise, but they rely on a good earth ground to drain energy effectively. Insulation alone doesn’t provide a discharge path or a stable reference. So to prevent damage from environmental electrical discharges, the PLC must be properly grounded.

Environmental discharges inject unwanted voltages into control gear, so giving the PLC a solid path to earth keeps its chassis and I/O at a safe reference potential. Proper grounding provides a low-impedance route for stray currents, which minimizes voltage spikes that could damage the PLC’s electronics. Bonding and shielding help reduce potential differences and noise, but they rely on a good earth ground to drain energy effectively. Insulation alone doesn’t provide a discharge path or a stable reference. So to prevent damage from environmental electrical discharges, the PLC must be properly grounded.

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