The thickness of copper telephone wires was/is specified by their weight per mile.
80 oz per mile is about 24 gauge in the USA
10 AWG
For a 15 amp circuit, a 14-gauge wire should be used.
10 gauge
For a 15 amp circuit, it is recommended to use 14-gauge wire.
For a 30 amp circuit, a 10-gauge wire should be used to ensure safety and proper functioning of the electrical system.
For a 50 amp electrical circuit, a 6-gauge wire should be used to ensure safe and efficient power transmission.
For a 30 amp 220v circuit, a 10-gauge wire should be used to ensure safety and proper functioning of the circuit.
For a 20 amp 220v circuit, a 12-gauge wire should be used to ensure safety and proper functioning of the circuit.
For a 30 amp circuit, a 10-gauge wire should be used to ensure safe and efficient electrical flow.
For a 40 amp circuit, a 8-gauge wire should be used to ensure proper electrical safety and performance.
For a 60 amp circuit, a 6-gauge wire should be used to ensure proper electrical safety and performance.
For a 220v electrical circuit, a wire gauge of at least 10 AWG should be used to ensure proper safety and efficiency.