If you are in the US, and in a residential application, you are probably using Romex type cable (NM, or NMC). That type of cable is restricted to the 60 degree column for ampacity calculations and would require a #6 copper wire for a 50A application. At that size, a 50' length will probably not impact the voltage drop.
# 6 gauge.
Might depend on your local codes, but here it is 6 AWG wire. <<>> A #4 copper conductor will limit the voltage drop to 2% or less when supplying 60 amps for 100 feet on a 230 volt system.
6 AWG
12 guage. The most current that can be sustained in 12 Ga wire is 20 Amps. Almost all 12 Ga wire sold for home use can handle 600 volts, so your 220 v A/C is covered. The voltage rating should appear on the jacket of the wire sheath.
With thick wires that have excellent insulation.
If it's a 220 volt circuit without a neutral bring wire into panel, put ground wire on ground bar, put load wires onto breaker.
Yes 220 & 240 are considered the same.
Wire guage is used as a measurement for the ampacity of the wire. # 14 wire is allowed 15 amp to be applied to it. Voltage is governed by the insulation factor of the wire. The three standard insulations are for 300V, 600V and 1000 volts.
Depending on the configuration of the cord cap, the green wire is ground, the white wire is the neutral and red and black wires are the 220 volt source.
Might depend on your local codes, but here it is 6 AWG wire. <<>> A #4 copper conductor will limit the voltage drop to 2% or less when supplying 60 amps for 100 feet on a 230 volt system.
# 3 gauge
6 AWG
12 guage. The most current that can be sustained in 12 Ga wire is 20 Amps. Almost all 12 Ga wire sold for home use can handle 600 volts, so your 220 v A/C is covered. The voltage rating should appear on the jacket of the wire sheath.
With thick wires that have excellent insulation.
If it's a 220 volt circuit without a neutral bring wire into panel, put ground wire on ground bar, put load wires onto breaker.
Wire is wire - is doesn't matter what voltage you use. However, if you are changing the voltage on a device from 240 to 120, given the same power requirement, you may need bigger wires for the doubled current (and increased heat of resistivity).
No !
A #8 AWG copper conductor with an insulation factor of 90 degrees C will limit the voltage drop to 2.26% or less when supplying 30 amps for 120 feet on a 220 volt system.