4 sets of 750 mcm aluminum.
Or four parallel runs of 600 MCM copper.
It depends on the length of the run
To calculate the wire size, a system voltage is needed.
This is a voltage drop question. To receive an answer to this question the voltage of the service must be stated.
From the question it is hard to establish whether the service size is 350 amps or the service conductors are 350 MCM in parallel. If the service is 350 amps, the grounding conductor is #3 bare copper wire. Parallel 350 MCM conductors will allow for a 600 amp service. The grounding conductor for a 600 amp service is a #1 bare copper wire.
To answer this question the voltage and load amperage is needed.
As a service entrance wire you need AWG # 3/0 gauge copper.
#6 bare copper wire.
200 amp service in chicago uses 3 aught.
It depends on the length of the run
To calculate the wire size, a system voltage is needed.
This is a voltage drop question. To receive an answer to this question the voltage of the service must be stated.
From the question it is hard to establish whether the service size is 350 amps or the service conductors are 350 MCM in parallel. If the service is 350 amps, the grounding conductor is #3 bare copper wire. Parallel 350 MCM conductors will allow for a 600 amp service. The grounding conductor for a 600 amp service is a #1 bare copper wire.
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
# 6 copper wire.
copper wire diameter,length and numbers of turns for 20 micro Henry inductance and 1600 Amp current
To answer this question the voltage and load amperage is needed.
This can't be answered without knowing the voltage, and ground is not the same as neutral, in AC circuits, which I'm assuming this is.