Repairing Stripped Breaker Panel and Electrical Box Cover Screws I show what I use to repair threads in breaker panels and electrical boxes to hold the cove. Replacing your electrical panel cover is crucial for maintaining the safety and efficiency of your electrical systems. A new cover not only protects the components from dust and damage but also ensures compliance with safety standards. Start at the main service panel, typically located in a basement, garage, or utility area. It is responsible for distributing electricity from the. Video: What filler plate is used, and how does it install, to fill the main circuit breaker opening in a QO or Homeline, high amp, convertible main load center cover? Product Design Features QO and Homeline Load Center The High Amp (150-225Amp Max. While common, customers also consider Neutral kit, Panel cover and.