In addition to the main types of electrical panels, there are several types of panel enclosures. Transfer switches are typically installed next to the main electrical panel, and they’re used to provide power to the circuits in the event of a power outage. Transfer SwitchesĪ transfer switch is an electrical device that’s used to safely connect a generator to the electrical system in a building. Sub-panels are typically located in the garage, and they’re usually connected to the main electrical panel via a circuit breaker. Sub-PanelĪ sub-panel is an electrical panel that’s used to supply power to specific areas of a building. Main lug panels are typically used in buildings with less than 200 amps of service. Instead, its line wires run to a type of electrical connector called a lug, which supplies power to the other circuits of the building. Main Lug PanelĪ main lug panel is a type of electrical panel that doesn’t have a main breaker. Typically located in the main electrical panel, the main breaker is a large switch that controls the flow of electricity to all the other circuits in the building. This is typically a meter box that houses the main breaker. The service entrance is where the electrical service comes into the building. A commercial building will usually have a main electrical service room, where the main panel will be located, and potentially smaller electrical rooms on other floors. The main electrical panel is typically divided into two sections: the service entrance and the main breaker. Main Electrical PanelĪ main electrical panel is the primary distribution point for all the electrical circuits in a building. Below, we go into more detail on each type of panel. ![]() Subpanels, on the other hand, are used to supply power to specific areas of a building. ![]() Main distribution panels distribute electricity to all the circuits in the structure. There are two primary types of electrical control panels: main distribution panels and subpanels. Other components include fuses, voltage regulators, and switches. Circuit breakers protect the electrical system from overload by automatically shutting off the power when it detects too much current flowing through the system. The most important components in an electrical control panel are the circuit breakers. These components work together to regulate and monitor the flow of electricity in a structure.
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