Electrical service box, where wires enter and are routed to the proper area, is the heart of the electrical system. Service entrance conductors are secured to heavy copper bars called Busbars and individual circuits are routed from them.
a collection of overload protective devices connected to buses where a power supply is subdivided into feeders and/or branch circuits.
A loadcenter used at a point beyond the building's service entrance. It is not typically supplied with a main breaker. This type of panel can be useful when adding additional electrical service to an existing building. It has an isolated neutral.
Metal box through which all electrical wiring passes, usually located at juncture with utility company line. Electricity is distributed from the panel to all usage points by means of circuits, or sets of wires.
A gray box in the basement of most houses that distributes the electricity throughout the house. Electricity travels from the generating station to the distribution panel to lights, outlets and electric appliances.
The main electrical control center, which contains switches or circuit breakers, is connected to the service wires and delivers current to the various branch circuits.
A rack-mounted panel of termination blocks used for cross-connection. Generally located in a wiring closet.
A separate or auxiliary breaker or fuse box separate from the main electrical service entrance. Its purpose is to tie all the electrical circuits of building into the main power line and allow each individual circuit to be protected by fuses or breakers to avoid overloading. Often referred to as the fuse box or service panel.
Box containing circuit breakers or fuses where power is distributed to branch circuits.