What type of cable is typically used for service entrance applications?

Type SE cable is specifically designed for service entrance applications, which makes it ideal for connecting the electrical service to a building. This type of cable can handle both the requirements of service entry and the environment it will be exposed to, as it is suitable for outdoor use and is generally weather-resistant.

Type SE cable comes in two types: SEU (which is a single conductor cable) and SER (which consists of several conductors under a single jacket). It is often used for both residential and commercial service entrance connections, providing the necessary capacity and protective features to ensure reliable operation.

The other cable types mentioned serve different purposes and environments. For instance, Type TC (tray cable) is designed for use in cable trays and is not typically rated for service entrance applications. Type MC (metal-clad cable) is used for both indoor and outdoor installations but is mainly intended for branch circuits rather than service entrance. Type UF (underground feeder cable) is suitable for underground applications but lacks the weatherproof capabilities and structural features necessary for a service entrance.

Overall, the use of Type SE cable ensures compliance with the National Electrical Code (NEC) standards for safety and reliability in service entrance installations.