For a distance of 450 feet, you would need, 2 sets of #4/0 (parallel 6 conductors) for aluminum, or 1 set of #350 copper.
80% loading of service and a 3% voltage drop.
Consult your local power company for exact requirements of their codes.
The conductor can be pulled into conduit and then buried but it is not certified for direct earth burial.
The frequency has no direct relationship to the size of wire. Wire is sized as to the amount of current a load draws in a circuit.
six awg
Service wire for 100 amps requires AWG #3 copper.
4 copper
The conductor can be pulled into conduit and then buried but it is not certified for direct earth burial.
The frequency has no direct relationship to the size of wire. Wire is sized as to the amount of current a load draws in a circuit.
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
# 6 copper wire.
Service wire required is AWG # 3/0 copper.
Service entrance wire should be AWG #3 copper.
2 copper
six awg
Service wire for 100 amps requires AWG #3 copper.
2AWG.
4 copper
You need to look at the regulations that apply in your country. If in doubt, use a neutral wire of the same size as the live wire or wires.