10 AWG.
8 gauge will be sufficient with less than a half volt drop
The voltage has nothing to do with the gauge of wire needed to supply a given circuit. The size wire is determined by the amperage of the overcurrent protection device (circuit breaker, etc.) being used to supply power to the circuit.
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Wire is not sized by voltage. It is sized by current measured in amps. Some common copper wire sizes and their current capacities are: 15 amps -- 14 gauge wire 20 amps -- 12 gauge wire 30 amps -- 10 gauge wire 40 amps -- 8 gauge wire
The National Electrical Code calls for #4 copper or #2 aluminum.
10 gauge
8 gauge will be sufficient with less than a half volt drop
At the service entrance you will need AWG 1/0 gauge.
I would run 1/0 gauge.
The minimum wire size allowable would be 10 gauge. For a 75 foot run however, the voltage drop would be 5.31 volts. This exceeds the NEC recommendation of no more than 3% (3.6v) so while it is not legally required, for best efficiency, you should run 8 gauge.
Depends on the size of the service. 100 amp service will require 3 gauge, 150 amp service will require 1/0 gauge, and 200 amp service will require 3/0 gauge.
As a service entrance wire you need AWG # 3/0 gauge copper.
The voltage has nothing to do with the gauge of wire needed to supply a given circuit. The size wire is determined by the amperage of the overcurrent protection device (circuit breaker, etc.) being used to supply power to the circuit.
3/0 gauge
NO NO NO it would only be able to withstand small arms fire from a great distance....Why do you ask ? if you have problems I supply a very good protection service
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To tell you how much air is in the air system.