Bathroom receptacles require at least one dedicated 20A GFCI-protected circuit. This circuit may serve multiple bathrooms but cannot serve other rooms.
| Recommended wire | 12/2 NM-B with ground |
| Breaker | 20A GFCI |
| Voltage | 120V |
| Typical amperage | 12A |
| Circuit amperage | 20A |
| NEC reference | NEC 210.11(C)(3) |
| Max recommended distance | 50 feet (without voltage drop concerns) |
GFCI protection is mandatory for all bathroom receptacles. The circuit can be GFCI protected at the breaker or at the first receptacle.