Safety and work practicesQuestion 818 of 1506

In a grounded system, on which conductor should the fuse be placed?

On the grounded conductor to the load
On the ground conductor only
On the ungrounded (hot) conductor going to the load
On either side; the safety result is the same

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Correct answer: On the ungrounded (hot) conductor going to the load

With the fuse in the hot conductor, only the grounded conductor stays connected after it opens, so the load is de-energized with respect to ground.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 12.4: Fuses

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Questions last reviewed: 18 October 2026

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