Which protection measure is used to minimize induced surges by routing conductors?

• A. Bonding
• B. Shielding
• C. Proper conductor routing
• D. Surge protection devices

Answer: (C)

Induced surges come from changing magnetic fields linked to a conductor and its return path. The size of the loop area between a supply and its return determines how much voltage is induced when those magnetic fields change. By routing conductors so that the current path and its return are as close together as possible, and by keeping sensitive lines separate from long parallel runs of high-current conductors, you drastically reduce the loop area and the mutual coupling.

In practice, this means laying out power and return conductors together, routing them along the same path, and avoiding long, parallel runs with other circuits. If routes must cross, crossing at right angles helps, and keeping high-current conductors away from sensitive control or signal wires further minimizes coupling.

Other measures like bonding, shielding, or surge protection devices address different protection aspects, but the specific way to minimize induced surges through routing is to reduce the loop area and mutual inductance by careful conductor routing.