In electrical systems, what denotes service equipment?

Service equipment refers to the apparatus that connects the utility power supply to the building's electrical system, providing necessary features such as overcurrent protection, disconnecting means, and service entrance. The main electrical panel serves as this crucial point where electrical distribution begins within a building. It typically houses the circuit breakers or fuses that protect individual circuits and is essential for managing electrical load while ensuring safety compliance.

The distribution board, while related to electrical distribution, is not the primary connection point from the utility but rather a secondary distribution point within the electrical system. The service mast is involved in the physical support and installation of service lines but does not function as a control or protection hub. Likewise, a power panel can refer to panels that distribute power throughout specific areas or zones in a facility but is not defined as the service point for the overall electrical supply. Thus, the main electrical panel is clearly identified as the service equipment in electrical installations, confirming its role in managing and safeguarding the incoming electricity supply before it is distributed to various circuits within the premises.