The North American electrical code states that a conductor for a motor must be rated at 125% of the motor's full load amperage. 125% x 50 = 63 amps.
A #6 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 65 amps respectively.
40 amp
To answer this question a voltage must be given.
To answer this question the voltage value and whether the system is three phase or single phase needs to be given.
A #14 wire will do fine for grounding a 20 amp device. That is the size of the ground wire in a 2 conductor # 12 wire building cable.
Identify the neutral wire on the generator. This will be the unused conductor to run the compressor. The ground and line1, line 2 are all that are needed.
If you have to ask here, you shouldn't be trying to wire in a 20A compressor. You will require a special circuit for the voltage and current with an independent breaker. Check your local code for the wire size or talk to a qualified electrician.
2 copper
6
Assuming your power supply is 230 volts, single phase: Full load amp draw = 21, circuit breaker = 50, minimum wire size = 10.
40 amp
To answer this question a voltage must be given.
To answer this question the voltage value and whether the system is three phase or single phase needs to be given.
A #14 wire will do fine for grounding a 20 amp device. That is the size of the ground wire in a 2 conductor # 12 wire building cable.
Identify the neutral wire on the generator. This will be the unused conductor to run the compressor. The ground and line1, line 2 are all that are needed.
The voltage for the air compressor is needs to come from a double (two) pole breaker. The size of the breaker needs to be 250% of the full load amps of the compressor. The wire size to the compressor has to be 125% of the full load amps of the compressor.
Yes, they are the same size wire.
15 amps.