What does 'conductors in raceways' refer to in WAC?

The phrase 'conductors in raceways' in the Washington Administrative Code (WAC) refers specifically to electrical conductors that are installed within conduits or raceways for the purpose of protection. This is important in electrical installations because conduits provide a physical barrier against environmental factors, mechanical damage, and electrical interference, thereby ensuring the safety and integrity of the conductors.

Using raceways is a best practice in electrical installations, as it also helps in organization and makes it easier to identify and manage electrical wiring systems. In the context of WAC, the regulation specifies how these conductors should be handled, installed, and maintained to comply with safety standards.

The other choices do not accurately capture this definition. For example, conductor types without insulation do not require raceways for protection, and the specification is not limited to only high-voltage conductors. Additionally, conductors that are not secured would not fall under the protective measures that raceways afford.