Experiencing a partial power outage where half your home works while certain outlets flicker indicates a severe electrical fault, such as a dropped utility line phase, a failing main breaker lug, or a loose neutral connection in your service panel. North American homes use a split-phase 240-volt system with two 120-volt hot legs; if one leg loses a solid connection, half the circuits lose voltage while others receive unbalanced power, causing flickering. You can troubleshoot electrical panel safety safely by avoiding bare components. You can verify that your corrective action is successful when contacting your electric utility provider to inspect the service drop or having an electrician tighten main panel lugs restores stable, balanced 120-volt power across all circuits.
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