15mm approx.
A wire size of at least 250 MCM (thousands of circular mils) is typically recommended for a current of 312 amps. Using wire size calculators or consulting with an electrician is advisable for specific installations to ensure the correct wire gauge is used for safety and efficiency.
The appropriate wire size for a circuit requiring 60 amps is typically 6-gauge wire.
For a 20 amp 250 volt circuit, you would typically use a 12-gauge wire. This wire size is rated to safely handle the current and voltage requirements of the circuit without overheating. It is important to always refer to local electrical codes and regulations to ensure compliance.
You would need to use a wire size that is rated for at least 40 amps to be safe and to meet the requirements of the air conditioner. A common wire size for this application would be 8 AWG copper wire, which is rated for 40 amps.
The appropriate wire size for a circuit that requires 30 amps of current is typically 10-gauge wire.
AWG 10.
The recommended wire size for a circuit carrying 35 amps of current is typically 8 AWG (American Wire Gauge).
The recommended wire size for a circuit carrying 80 amps of current is typically 4 AWG (American Wire Gauge).
15 amps.
4/0 (4 ought) in copper will handle 250 amps. The voltage drop at 175 ft. is about 2.14 volts which should be okay.
# 4 copper wire short distance.
300 Amps if used for service entrance conductors. Table 310.15