How To Open The Square-Shaped External Subpanel Cover?

Outdoor electric panels come from six different OEMs and are typically push/lockable tab opening. To install a sub panel, follow these steps:

1. Screw the top of the panel in first, keeping the screw loose enough for leveling. Place a bubble level on top of the box and adjust until it is level.
2. Open the hinged electrical panel access door to access the sub panel.
3. Drill the Square D Homeline Sub Panel to the main panel.
4. Power the sub panel from a 2-pole 100A breaker in the main panel.
5. Get a detailed Square D 100 amp sub panel wiring diagram to help with proper wiring and connection.
6. Isolate neutral and ground. The distribution board should not be installed 2.2 meters above the floor, must be protected from corrosion, and away from watery areas. All wires should be covered in the panel board.
7. Add a subpanel to your detached garage as a cost-effective way to expand electrical capacity and circuits. This step-by-step guide covers crucial steps such as sizing feeder wire and subpanel amperage.
8. Remove all wires from the panel. Rebuild the wall and place plywood in front of the panel.
9. Open the cabinet by pressing the tab to the left and pulling the door towards you simultaneously.
10. All QO and Homeline load center enclosures have twistouts in the deadfront trim that must be removed to install branch circuit breakers in the load center. Home Depot sells 30 circuit QO replacement covers, but many supply houses sell Sq D covers separately.