AWG 10 guage.
For a 25 amp circuit over 420 feet, you would typically need a 10 gauge wire to ensure minimal voltage drop and proper safety. It's always recommended to consult with a qualified electrician to determine the best wire size for your specific situation.
The size of the ground wire for a circuit is typically based on the size of the circuit breaker protecting that circuit. For a 200 amp circuit breaker, the recommended ground wire size is 4/0 AWG (American Wire Gauge) copper wire. This wire size helps ensure that the ground wire can safely carry any fault currents that may occur in the electrical system.
A #10 copper conductor with an insulation rating of 90 degrees C is rated at 30 amps. A 40 amp circuit would need a #8 wire. To do a voltage drop calculation for a distance of 65 feet, a voltage of the circuit must be stated. Depending on the answer obtained from the calculation you might have to jump up one more size to #6.
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.
A 14 gauge wire is typically used on a 15 amp circuit breaker. It is not recommended to use a larger circuit breaker with a smaller wire size as this can create a fire hazard.
Cannot answer this question. Will need to know the voltage and amperage of the circuit. Also need to know the application i.e. is it a lighting circuit or a motor circuit?
The recommended wire size for a 30A circuit is typically 10-gauge wire.
The recommended wire size for a 40A circuit is typically 8-gauge wire.
The recommended wire size for a 60A circuit is typically 6 AWG (American Wire Gauge) for copper wire.
The appropriate wire size for a 20 amp circuit is typically 12-gauge wire.
For a 25 amp circuit, the appropriate wire size is typically 10 gauge wire.
The appropriate wire size for a 30 amp circuit is typically 10 gauge wire.
The appropriate wire size for a 50 amp circuit is typically 6-gauge wire.
The recommended wire size for a 220v electrical circuit is typically 10-gauge wire.
The recommended wire size for a 240V electrical circuit is typically 10-gauge wire.
The recommended wire size for a 30 amp circuit is typically 10 gauge wire.
The recommended wire size for a 60 amp circuit is typically 6-gauge wire.