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How to Remove a Motor Control Center (MCC) Bucket via Secure Connect

Safe Removal of MCC Buckets: A Step-by-Step Guide

Overview

This article and video outlines the proper steps to safely remove a Motor Control Center (MCC) bucket equipped with the Secure Connect system. Following these instructions ensures safety and maintains the integrity of your MCC system. Always consult your plant’s lockout/tagout procedures and wear the appropriate PPE.

Required Tools & Equipment

  • Proper Personal Protective Equipment (PPE)

  • Secure Connect hex tool (torque screwdriver if applicable)

  • Multimeter (for voltage verification)

Step-by-Step Instructions

1. Prepare for Removal

  • Ensure that the disconnect handle on the MCC bucket is in the OFF position.

  • Follow your facility’s Lockout/Tagout (LOTO) procedures to isolate power sources.

2. Retract the Power Stabs

  • Use the Secure Connect hex tool to retract the power connections from the bus.

  • Rotate the tool clockwise until the mechanism is fully retracted. This isolates the bucket from line power.

3. Verify Power Disconnection

  • Use a multimeter to confirm that there is no voltage present on the line side and load side of the circuit.

  • Check per your facility’s electrical safety protocols.

4. Confirm Shutter Closure

  • Ensure the protective shutter has automatically closed over the bus stabs after retraction.

  • This step is critical for ensuring personnel safety during bucket removal.

5. Remove the Bucket

  • Once power is confirmed to be disconnected and the shutter is closed:

    • Loosen and remove the hardware securing the bucket in place.

    • Slide the bucket out of the MCC structure carefully, using proper lifting techniques or assistance if needed.

Configuration Considerations

Some MCC configurations may have variations:

  • If your system includes auxiliary or control wiring, label and disconnect these before removing the bucket.

  • For bucket sizes above standard height, ensure clearance and lifting tools are adequate.