If a secondary conductor of a transformer is linked to a grounding electrode, what happens to the fused conductors?

When a secondary conductor of a transformer is linked to a grounding electrode, the current flow can cause the fused conductors to open. This occurs because the linkage to the ground introduces a direct path for fault current, which can lead to excessive current flow through the fuse. If the current exceeds the rated capacity of the fuse, it will heat up and eventually melt, thereby "opening" the circuit.

Opening the fused conductors is a critical safety mechanism, as it prevents potential hazards such as damage to the transformer, the conductors, or electrical fires that could arise from an overloaded system. This safety feature is designed to protect both equipment and personnel by interrupting the power supply when an abnormal condition, such as grounding, is detected.

The other outcomes, such as overheating or short-circuiting, do not accurately describe the protective function of the fuses in this scenario, as the primary role of the fuse is to respond by opening the circuit under fault conditions.