Which risk increases when incorrectly sizing step-down transformer amperage in an industrial power distribution system?

💡 Explanation

When a step-down transformer is undersized, exceeding its amperage rating causes overheating, leading to insulation breakdown, which then trips upstream protective devices. Therefore cascading trips become more likely, rather than capacitor failure, impedance changes, or harmonic resonance effects, all requiring different triggering events and circuit vulnerabilities.

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