The answer to 'when to replace electrical panel' is that you should generally replace your home's electrical panel every 20-30 years, or sooner if it's outdated, damaged, or unable to handle your home's electrical needs. Older electrical panels may become unsafe or unable to support modern electrical demands, putting your home at risk of electrical fires or other hazards.
Some key signs it's time to replace your electrical panel include frequently tripping breakers, burning or discolored outlets or switches, and a panel that can't accommodate new circuits or higher amperage. If your panel uses outdated technology like fuses or has a capacity under 100 amps, it's likely time for an upgrade to a modern, safer circuit breaker panel.