A 600 amp service for a residence is not in the normal range of residential wiring. The service will require special metering and installation procedures along with consultation with utility company and the electrical inspector. Most home wiring electricians are limited as to the amount of current their licence will allow them to install. This is usually 200 amps.
Two parallel 350 MCM conductors with an insulation factor of 90 degrees C will give you an ampacity of 650 amps.
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.
The size of wire for service entrance conductors for a 400 amp 3 phase service could be 500 MCM copper. This is very large size wire and difficult to bend and shape, to connect to terminals in the main disconnect and distribution panel. This problem is solved by using parallel conductors or on higher ampacities triple conductors. Using parallel conductors the wire size would be three ought (3/0) copper.
It depends on the length of the run
4 sets of 750 mcm aluminum. Or four parallel runs of 600 MCM copper.
depends on your needs
Need to know what size service is going to be installed at the end of the run.
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 200 amp service panel with a 60 amp sub-panel.
500 mcm
The size of wire for service entrance conductors for a 400 amp 3 phase service could be 500 MCM copper. This is very large size wire and difficult to bend and shape, to connect to terminals in the main disconnect and distribution panel. This problem is solved by using parallel conductors or on higher ampacities triple conductors. Using parallel conductors the wire size would be three ought (3/0) copper.
It depends on the length of the run
A #3 copper conductor with an insulation factor of 90 degrees C is rated at 115 amps.
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
On large service entrance services the neutral can be reduced. The amperage of the service and the voltage of the service and the insulation factor of the 500 MCM conductors need to be stated to answer this question correctly.
4 sets of 750 mcm aluminum. Or four parallel runs of 600 MCM copper.
depends on your needs
parallel parking dimensions ohio