Even if your electric panel can work properly, your switching box can always be obsolete. The electric service panels must be replaced every 20-30 years. If you have been in your home for so long, or if you have moved to an existing home, your panel may be obsolete.

You cannot lock it, because it is for firefighters or emergency teams to cut electricity if there is a fire or another emergency.

To manage the increase in electrical loads, you could also improve the electrical cables, especially if your home is over 40 years old. Improving the electrical cables is a great job because the cables are inside the walls, if they are hard to get without opening the walls.

Replace the main circuit breaker is not hard, but appropriate safety precautions are needed to do the job properly. Call the power company, remove the meter, replace the circuit breaker and they can reinstall the meter. If your area requires a permit, get it.

If your electrical panel is a panel of 60 amps, you certainly need an upgrade. If it is a panel of 100 amps and you notice blurred or flashing lights, you may also need an upgrade.