W. Va. Code R. § 36-48-11

Current through Register Vol. XLI, No. 50, December 13, 2024

Section 36-48-11 - Control Circuits and Barriers

11.1. The control circuit for the power center shall be interlocked with the primary disconnecting device in the power center so that:

11.1.a. When the primary disconnecting device is in the open position, the control circuit can only be powered through an auxiliary switch in the test position; and

11.1.b. When the primary disconnecting device is in the closed position, the control circuit can be powered only through an auxiliary switch in the normal position.

11.2. Each cover or removable barrier providing access to energized high-voltage conductors or parts must be equipped with at least two interlock switches. Removal of any of these covers must automatically de-energize the incoming high-voltage to the power center.

11.3. The control circuit of each 2400-volt output circuit shall be located in a properly dead fronted compartment. Trouble shooting or testing shall be able to be performed in the control circuit compartment without exposing miners to high-voltage conductors or parts.

11.4. Barriers shall be provided and covers shall be arranged so that miners can work in the 2400-volt section of the power center without being exposed to any energized high-voltage conductors or parts, including capacitors, when the primary disconnect switch is in the open and grounded position.

11.5. Barriers shall be provided and covers shall be arranged so that miners can test and troubleshoot low and medium voltage circuits without being exposed to any energized high-voltage conductors or parts, including capacitors, regardless of the position of the primary disconnect switch.

W. Va. Code R. § 36-48-11