Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: What is an example of wiring requiring an electrical conductor?
a light switch turning on lights because of steel inside the wiring
A household electrical circuit with a 120-volt outlet and a 15-amp circuit breaker would require a copper conductor