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A #8 copper wire with an insulation factor of 75 or 90 degrees C has a rating of 45 amps. The load amperage and voltage must be stated to give a voltage drop calculation.
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The answer requires more information i.e. what is the voltage how far do you want to run the #8 wire?
#8 wire is limited to carrying 24 amps per the National Electrical Code is it's carrying power for transmission from one point to another. It also exhibits a resistance of .682 ohms per 1000 feet so this resistance relates to voltage drop at the end of a piece of wire. Normally a run of 300 to 500 feet is no problem as long as you are prepared to have a little less current at the end of the wire.
The way the wire is run also has a great deal to do with the distance. If it's placed in a raceway (read conduit) by itself or with other conductors then the wire ampacity must be derated.
As you see, there's a lot to it. The best rule of thumb is that is you need 20 amps at a 1000 feet, use the next size wire or AWG #6.
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What size wire is required to run 100 amp service 100 yards?
I would recommend you use AWG # 2 copper or AWG # 1/0 aluminum for that distance and amperage.
What size wire is needed to run a 75 amp 240 volt circuit with 100 ft run?
For a 75 amp circuit with a 100 ft run, you would need a #4 AWG copper wire to ensure minimal voltage drop and to meet electrical code requirements. Using the correct wire size helps maintain the efficiency and safety of the circuit.
What gauge wire for 75 amp?
For a 75 amp circuit, use a wire gauge of at least 6 AWG for copper wire or 4 AWG for aluminum wire to ensure it can safely handle the current without overheating. It's always recommended to consult with a professional electrician to determine the appropriate wire size for your specific application.
What size wire do you need to run to an air conditioner that has a maximum breaker size of 40 amps and a minimum circuit size of 25.3 amps?
You would need to use a wire size that is rated for at least 40 amps to be safe and to meet the requirements of the air conditioner. A common wire size for this application would be 8 AWG copper wire, which is rated for 40 amps.
What gauge wire to run 40 amp 220 volt circuit 60 feet in residence?
For a 40 amp 220 volt circuit run 60 feet in a residence, it is recommended to use a #8 AWG copper wire for the wiring. This will ensure that you have a safe and efficient electrical connection for your circuit.
