Electrical Sub Panel Installation Service

Subpanels are added to a system for three common reasons: space, convenience, or efficiency. Subpanels are usually used to extend the wiring for multiple branch circuits to a specific area of a home or to a building at some distance away from the main panel. A garage, outbuilding, or a room addition might be a place to put a subpanel. Additionally, a subpanel may be required for those who have just purchased an electric vehicle and require a dedicated circuit for their new EV charger. The idea is to run a single set of feeder wires from the main panel to a subpanel, where the power will then be divided into multiple branch circuits serving that building or area of the house. The circuits running from the subpanel may power light circuits, outlet circuits, or appliance circuits—just like the main service panel.

Before you begin installing a subpanel in your home or request this service from your local electrical contractor, ask yourself if you really need one. Here we share some insight from our electricians as they give us reasons to install a subpanel in the home, which type of subpanel is recommended, and where you should put a subpanel.

Residential Electrical Sub-Panel Installation

What is an Electrical Sub Panel?

A subpanel is a smaller service panel that distributes power to a specific area of the home or other building on the property. It is essentially a satellite circuit breaker panel that has its own breakers and is usually installed in an area that is convenient to the area it serves. The subpanel is fed by a double-pole 240-volt breaker at the main service panel, and this single feed circuit is divided into additional branch circuits at the subpanel.

Do I need a sub panel?

If the service panel does not have room for new circuit breakers and you cannot use tandem breakers, a sub panel may be the answer. A sub panel connects to the main service panel with a thick three-wire cable. The feeder breaker in the main panel acts as the main disconnect for the subpanel. Before installing one, consult with an inspector to make sure you do not overload your overall system.