When Upgrading Your Electrical Panel Make Sense
Every electrical panel comes with an amperage limit, with the average ranging anywhere from 100 to 200 amps. The higher the amperage, the more electrical devices and gadgets you can power simultaneously.
This amp limit also determines how large a solar PV system you can install.
Any breaker box with an amp rating lower than 100 will likely struggle to support an average-sized residential PV system. And adding more PV panels is doable. But the total amount of usable solar electricity entering your home will remain unchanged. This is because the amperage (or “flow rate”) of your electrical panel box won’t allow more electrons to move through the system.
In addition, adding an “oversized” solar PV system can also create fire safety issues. When you load your breaker box with more appliances and solar electricity than it can handle, this can cause irreversible damage to your home’s electrical wiring.