You cannot directly connect a 230V 27A European appliance with a brown, blue, and yellow-green wire configuration to a 30A 220V breaker in the US. Here's why:

1. Voltage Differences:

* Europe: Uses 230V (nominal) single-phase electricity.

* US: Uses 240V (nominal) for larger appliances.

* However, the 220V breaker you mentioned is likely intended for a 240V system and may not be compatible with 230V.

2. Wiring Configurations:

* Europe: Uses a three-wire system (brown = live, blue = neutral, yellow-green = ground).

* US: Uses a three-wire system for 240V, but the colors are typically black, white, and ground (green or bare copper).

3. Plug and Socket Compatibility:

* European and US appliances have different plug and socket configurations.

Safe and Correct Solution:

1. Voltage Conversion: You'll need a voltage converter specifically designed for 230V to 240V conversion and the appropriate amperage rating (at least 27A).

2. Plug Adapter: A plug adapter is required to match the European plug to the US socket.

3. Grounding: Ensure the voltage converter and plug adapter are properly grounded.

Important Note: Never attempt to modify the wiring or use adapters without proper electrical knowledge and expertise. Consulting a qualified electrician is crucial for ensuring safe and correct installation.