The size of wire you should use for a 220V dryer depends on the electrical load (amperage) of the dryer and the length of the wire run. Typically, dryers in North America require a 30-amp circuit, but it's essential to check the dryer's nameplate or the manufacturer's specifications to confirm the exact amperage rating.
Assuming your 220V dryer requires a 30-amp circuit, the recommended wire size would be:
- For copper wire: Use 10 AWG (American Wire Gauge) wire.
- For aluminum wire: Use 8 AWG wire.
If the wire run is very long, or if there are specific local electrical codes that require a larger wire gauge for certain distances, it's best to consult with a licensed electrician to ensure compliance with safety regulations and to determine the appropriate wire size for your specific installation.
Keep in mind that electrical work can be hazardous and should be carried out by a qualified professional to ensure the safety and integrity of the installation.