What two pieces of information are required to be marked on cable jackets according to best practices?

The two pieces of information that are required to be marked on cable jackets according to best practices are critical for ensuring safety and compliance in electrical installations. One of the key elements is the voltage rating. This information is essential as it indicates the maximum voltage that the cable can safely handle. This helps in preventing potential electrical hazards and ensures that the cable is suitable for the specific application in which it is being used.

Having the voltage rating marked on the cable jacket allows inspectors and installers to quickly assess whether the cable is appropriate for the intended use without having to refer to the manufacturer's specifications or documentation. It contributes to overall safety by allowing easy identification and ensuring that only cables rated for the specific voltage level are used in particular installations.

While other options such as the name of the project, permitted uses, and the year manufactured provide valuable information, they are not universally required to be marked on cable jackets in accordance with best practices, especially regarding safety and compliance standards. Thus, the correct answer centers around the voltage rating as a primary safety feature in electrical cable identification.