Two cables that receive power coming in from the outside.Protective cover giving access to the technical part of the panel.A swinging hinged door providing access to the switches.The older fuses pull in and out instead of the rocker-style installing and removing circuit breakers.Īn electrical service panel composes of the following Note that a circuit breaker panel is not the same as a fuse box because it has mechanical, toggle-switch individual circuit breakers, not fuses, but it does perform the same function just in a safer manner. Therefore, a service panel is the distribution point that connects the incoming main service wires (service drop) to the exit wires(branch wire circuits), which branch off to distribute electricity to different parts of the house. A subpanel is not bonded but has two hot wires, one neutral wire, and a bare copper wire for grounding. It is always good to know that the main service panel has the main disconnect.Īlso, the main service panel is bonded. Often, you will find a single circuit breaker at the meter, which is the main breaker (service disconnect), and one or more remote distribution subpanels inside the house.ĭepending on the electrical panel installation, you may find the main service panel and disconnect circuit breaker either on the top or bottom, depending on whether the service wire feeds from overhead or underground. Today, most builders install the main disconnect outside (the main panel) and the distribution panel ( subpanel) inside the house or garage. In older homes, you may find the main service disconnect and the breaker together.
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