To keep costs down, by special permission in the electrical code, for home wiring on a 120/240 volt system 2/0 is allowed. For any other type 200 amp service 3/0 that has a insulation factor of 75 or 90 degrees C is rate at 200 and 225 amps respectively.
The wire size depends on how much current it will conduct.
The size of conductor needed will be a #14. It should be copper and have an insulation factor of 90 degrees C. The fact that it is a three phase load does not enter into the calculation of the wire size.
As with any electrical installation, the wire size used depends on the expected maximum current the wire will carry. That cannot be determined by voltage alone.
A 1/0 aluminum conductor will limit the voltage drop to 3% or less when supplying 30 amps for 500 feet on a 240 volt system.
Wire size is governed by amperage not voltage. Voltage is an insulation factor when talking about wire. Add up the amperage of fixtures you want in the circuit. Once that is found then the size of the wire can be calculated.
The wire size depends on how much current it will conduct.
AWG # 10 wire on 30 amp circuit.
The recommended wire size for a 220 volt circuit according to the 220 volt wire size chart is typically 10 gauge wire for a circuit with a maximum of 30 amps.
The recommended wire size for a 220-volt electrical circuit is typically 10-gauge wire.
The recommended wire size for a 30 amp 220 volt circuit is typically 10 gauge wire.
The appropriate wire size for a 220 volt 30 amp circuit is typically 10 gauge wire.
For a 220 volt circuit with a 30 amp capacity, the appropriate wire size would be 10 gauge wire.
you must run the proper size wire based on the ampacity needed, wire must have four conductors including the gound
For a 220 volt circuit with a 40 amp load, the appropriate wire size would be 8 AWG (American Wire Gauge) copper wire.
If it is a 110 volt light it can safely run on a 20 amp circuit with AWG # 12 wire.
For a 30 amp 240 volt circuit, a wire size of 10 AWG should be used.
For a 240 volt 40 amp circuit, the appropriate wire size is typically 8 AWG (American Wire Gauge) for copper conductors.