# 3 gauge
AWG # 10 wire on 30 amp circuit.
Depends on the size of the circuit which you did not list.
The ground wire in a two or three conductor #12 cable is a #14 bare ground wire.
No !
For a 225 amp 208 volt 3 phase circuit, you would typically need to use a 3/0 AWG copper wire or a 250 kcmil aluminum wire. Be sure to consult with local electrical codes and regulations to ensure compliance with specific requirements for your installation.
For a 70 amp service at 240 volts, you would typically use a wire size of 4 AWG copper wire. This wire size is suitable for carrying 70 amps of current safely over a 240 volt circuit. Be sure to consult local electrical codes and regulations to ensure compliance with requirements in your area.
Yes, no problem at all going to a larger ampacity of wire. Larger size wire yes, smaller size wire no.
If it is a 110 volt light it can safely run on a 20 amp circuit with AWG # 12 wire.
For a 220 volt, 10 amp circuit, you can use 14 gauge wire if the circuit is protected by a 15 amp breaker or fuse. However, it's always a good idea to consult local electrical codes and regulations to ensure the correct wire size for your specific situation.
For a 60 amp circuit, a 6 gauge wire is typically used as the neutral wire. This wire size ensures proper grounding and safety for the circuit. Make sure to always consult the National Electrical Code (NEC) and local codes for specific requirements in your area.
For a 20 amp circuit, a 12-gauge copper ground wire is typically recommended. This wire size can safely handle the current and provide proper grounding for the circuit.