Is the metal case of a power factor correction capacitor required to be grounded if it is mounted 15 feet above ground?

The correct understanding is that the metal case of a power factor correction capacitor does not require grounding when it is installed 15 feet above ground level. The grounding requirement primarily addresses safety concerns related to electrical faults and the risk of electric shock.

Since the capacitor is mounted at such a height, it is less likely to be accessible, reducing the likelihood of accidental contact with the metal case. Furthermore, grounding is typically mandated for equipment that is accessible to ensure that any fault currents can safely dissipate to the ground. In the case of this capacitor at a height of 15 feet, the risks associated with accessibility are significantly mitigated, allowing for an exception to the grounding requirement.

Understanding these criteria helps in determining when grounding is necessary, which is influenced by both the height of the installation and the accessibility of the equipment.