A motor controller disconnecting means shall be permitted to be out of sight of the controller for motor circuits over how many volts?

The distinction regarding motor controller disconnecting means and their visibility is significant for safety and operational efficiency in electrical systems. Specifically, motor circuits operating at voltages above 1,000 volts can have their disconnecting means located out of sight from the controller. This provision is largely based on the increased safety and practicality associated with higher voltage systems.

When voltages exceed 1,000 volts, the risks and considerations for operation and maintenance change, allowing for more flexibility in the placement of disconnects. This is essential in applications where physical space constraints exist or where the disconnecting means may be better positioned to serve multiple controllers or provide ease of access for maintenance personnel. It reflects an understanding of the operational environment and the need for effective safety protocols in high-voltage applications.

The choice of 1,000 volts is consistent with recognized electrical codes and standards that aim to balance operational efficiency with safety protocols, ensuring that while disconnect means can be out of sight, they remain accessible and clearly marked for those who need to manage the equipment.