Yes, you can add a second 200-amp panel box outside the house and connect it to the same meter base. However, there are some important considerations to keep in mind: Local Codes

Always check with your local electrical inspector or building department to ensure that this is permitted in your area. Some jurisdictions may have specific requirements or limitations on having multiple main panels.

Metering

If you are adding the second panel for a specific purpose, such as powering a workshop or an outdoor building, you may need to consider installing a separate meter to track the energy consumption. This is especially important if you plan to rent out the outdoor space or sell electricity to tenants.

Circuit Protection

Make sure that each panel has its own main circuit breaker to protect the branch circuits within that panel. The main breakers should be rated for the maximum amperage allowed by the wire size used in the panel.

Conductors

The conductors connecting the second panel to the meter base must be properly sized to handle the load and meet the requirements of the National Electrical Code (NEC).

Disconnect

Each panel must have a readily accessible disconnect switch or circuit breaker to allow for isolation during maintenance or emergencies.

Grounding

Ensure that both panels are properly grounded to the grounding system of the house.*

Distance: The distance between the meter base and the second panel should be kept as short as possible to minimize voltage drop.Once you have considered these factors and received the necessary approvals, you can proceed with installing the second panel outside the house. It is recommended to consult with a qualified electrician to ensure that the installation is done safely and in compliance with all applicable codes and standards. Flag for review