Which part of Article 250 specifically applies to grounding systems and circuits over 1,000V?

The correct part of Article 250 that specifically applies to grounding systems and circuits over 1,000V is Part X. This section is dedicated to the grounding and bonding requirements associated with high-voltage systems.

Part X lays out provisions aimed at ensuring safety and protection against electrical faults in circuits that operate at voltages exceeding 1,000V. These requirements are crucial because high-voltage systems present unique challenges and risks that must be addressed to prevent electrical hazards, equipment damage, and ensure reliable operation.

In contrast, other parts of Article 250 are geared towards lower voltage systems or general grounding and bonding practices. Part II, for instance, covers grounding and bonding of services and feeders but does not specifically address high-voltage scenarios. Understanding where to find the correct requirements for high-voltage grounding is critical for compliance with electrical safety codes and the implementation of safe electrical systems.