Main Switchboard Upgrade Leichhardt

Scope of works: Replace precinct MSD

Successful Switchboard Upgrade & Installation in Leichhardt

McIntosh Electrical recently completed the design, manufacture, and installation of a custom main switchboard for a major electrical upgrade. The project was executed efficiently, safely, and within the specified timeframe, ensuring minimal disruption while delivering a high-quality outcome.

Project Scope & Switchboard Specifications

The newly installed switchboard was constructed to precise specifications, meeting the site’s electrical demands. Key features included:

• • Dimensions: 2030mm (H) x 2070mm (L) x 450mm (D).
  • Circuit Protection: 
    • 400A 3P MCCB – Shed 3
    • 300A 3P MCCB – Shed 2
    • 125A 3P MCCB – Face Engineering
    • 250A 3P MCCB – Shed 4
    • 250A 3P MCCB – Solar
    • Two spare 250A spaces (CB not provided) for future expansion.
  • Construction & Design: 
    • Front access, bottom entry/exit, IP56 rating
    • Form 3b/4a, 36kA rating, and air-insulated busbar
    • Custom mild sheet steel assembly, powder-coated single colour, and galvanised plinth
  • Additional Features: 
    • 800A SPD MCCB main switch
    • 100kA 3P surge diverter
    • Digital power meter with RS485 (PM5350)
    • Supply authority CT metering & meter panel
  • Client-Specific Variations: 
    • The switchboard was reconfigured to include a 400A MCCB for a future unmetered section.

Timeframe: Preplanning and drawings approval 7 weeks – Installation Work Completed over 2 Days (Over a weekend)

Comments:

Installation Process & Execution

• Timely Completion: The project was completed within the planned 6-8 week timeframe, with shop drawings approved on schedule.
• Efficient Installation: 
  • The installation occurred over a designated weekend, with a shutdown on Friday afternoon.
• Expert Team & Workflow: 
  • A team of 3-4 electricians, Level 2 contractors, and Ausgrid inspectors worked efficiently to complete the installation within 20 hours.
  • The switchboard was delivered and positioned on-site Friday afternoon next to the existing board.
  • Our Level 2 contractor managed the shutdown and temporary reconnection of unrelated services.
  • The existing switchboard was carefully dismantled and removed, with all metal components recycled and asbestos panels disposed of in accordance with NSW Work Health & Safety Regulations 2017.
  • The new switchboard was lifted into place using a Winchlifter Trolley System, securely bolted, and reconnected with solar integration readiness.

Challenges & Execution

1. Extreme Time Constraints – Power Restoration Was Critical

The biggest challenge of this project was completing the installation within a strict weekend shutdown window for a commercial complex. With the entire commercial complex relying on the upgrade, the team had to work efficiently to ensure power was restored as quickly as possible.

• The shutdown and installation were scheduled for a single weekend, with no room for delays.
• The McIntosh team worked non-stop for 12 hours, ensuring all components were installed and tested and power was restored within the required timeframe.
• By Sunday afternoon/Monday morning, the new switchboard was operational following a successful Ausgrid inspection.

This project demonstrated McIntosh Electricals’ commitment to precision, compliance, and high-quality workmanship and its capability to handle complex commercial power and board upgrades within a tight timeframe.   (Add Contact Us & Call Now buttons)