What is a service entrance?
A service entrance is the physical point where electrical power from the utility company enters a residence, consisting of the meter base, weatherhead, service conductors, and main disconnect.
The service entrance is where your home's electrical power originates. It begins at the utility company's lines outside your house and includes several key components: the weatherhead (the fitting where overhead service lines attach), the service conductors (heavy-gauge wires running down to your meter), and the meter base (the box holding your electric meter). Below that sits the main service panel or breaker box, which houses the main disconnect and circuit breakers that distribute power throughout your home.
Understanding your service entrance matters because it represents the boundary between utility responsibility and homeowner responsibility. The utility company maintains everything up to and including the weatherhead. Everything from the meter base downward is yours to maintain or repair. For homes in Spartanburg with aging service equipment, undersized panels, or storm damage, the service entrance is often the first point of inspection.
Most residential homes have 100-amp or 200-amp service, though older houses may have 60-amp panels. If you're planning major renovations, adding circuits, or replacing old equipment, an electrician will evaluate your existing service entrance to confirm it can handle the load. This is also the point where permits are pulled for significant electrical work. Damage to the service entrance from weather or wear requires prompt professional attention, as improper repairs create fire and safety hazards.