A #8 copper conductor with an insulation factor of 75 or 90 degrees C are both rated at 45 amps.
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Yes, a 20 amp breaker requires AWG # 12 copper wire. A 15 amp breaker requires AWG # 14 copper wire.
For a 100 amp service, a common feeder wire size would be 2 AWG (American Wire Gauge) copper or 1/0 AWG aluminum. These sizes are appropriate for handling the current capacity needed for a 100 amp electrical service. It is important to consult with a licensed electrician or local building code requirements to ensure the proper wire size for your specific installation.
To carry a 100 amp load safely using 10 AWG wire, you would need at least two conductors in parallel. Each 10 AWG wire can typically handle around 30-35 amps safely, so two wires would provide the necessary capacity. However, it's recommended to consult with a qualified electrician for a precise calculation based on your specific setup.
Depends on the wire size used in the circuit. If you use AWG # 14 wire you must use a 15 amp breaker. If it is wired with AWG # 12 wire then you use a 20 amp breaker. If a AWG # 10 wire is used then a 30 amp breaker is required. The breaker protects the wiring from overheating so you must use the proper size breaker for the wire used.
AWG # 14 copper.