The answer to 'when to replace fuse box' is that you should consider replacing your home's fuse box or circuit breaker panel every 20-30 years, or sooner if you notice signs of damage or frequent issues. Older fuse boxes may become outdated, lack safety features, and be unable to handle the electrical demands of modern homes.
Some key signs it's time to replace your fuse box include frequent blown fuses, breakers that trip often, burning smells, or visible damage. Upgrading to a modern circuit breaker panel can improve safety, increase capacity, and make it easier to add new circuits as your electrical needs grow.