Which component is associated with lowering follow-current in a lightning protection system?

The component associated with lowering follow-current in a lightning protection system is the metal-oxide arrestor. Metal-oxide arrestors play a crucial role in protecting electrical systems from overvoltage conditions caused by lightning strikes and other surges. They function by diverting excess voltage to the ground, effectively clamping down voltage surges and thus reducing the risk of damage to electrical equipment.

When a lightning strike occurs, the metal-oxide arrestor allows the surge current to flow through its elements and into the ground. As the voltage from the surge increases, the metal-oxide material within the arrestor becomes conductive, thereby providing a path for the electrical energy and preventing it from following through sensitive equipment. This action results in the suppression of follow-current, which could otherwise pose a risk to connected circuits.

In contrast, while a surge capacitor can absorb some surge energy, it does not specifically address the follow-current aspect in the same way. Grounding rods are essential for providing a safe path to ground but do not directly control current surges. Transformers are primarily used to change voltage levels in a circuit and do not play a direct role in lightning protection. Therefore, the metal-oxide arrestor is the best choice for effectively managing follow-current in a lightning protection