Electrical Sub Panel Sizes

The heart of a home s electrical system is the main circuit breaker box also known as the main service panel.

Electrical sub panel sizes.

Best seller square d homeline 125 amp 12 space 24 circuit indoor main lug plug on neutral load center with cover ground bar value pack. When planning the wire size for a sub panel or any panel for that matter it is important to factor in the length of the distance to the panel from the source and the amperage of the sub panel. A subpanel is often installed in a barn workshop garage or other addition to a home. To calculate the required wattage rating needed to supply the subpanel multiply the total wattage from the square footage and appliance calculations times 1 25 to get the adjusted load this safety adjustment is required by the national electrical code and provides a buffer for voltage drop on the feeder circuit.

Sub panels are best when multiple circuits are needed in a single area separate from your main house such as a workshop or greenhouse. A sub panel is a smaller electrical panel that services a specific area of the home. I would like to upgrade and put a breaker box in the garage so i can put in more lights outlets and run a pool pump etc. Main panels come in scores of sizes and configurations.

Calculating subpanel wattage. It s usually located near the area it powers. Run the conduit from the garage to the main panel box. Dig an 18 inch deep trench for the outdoor electrical wire which you will run from the main panel box to the garage sub panel.

Subpanels are rated in terms of how much power they can safely monitor. I currently have power ran out to my garage however it only runs 2 lights and the wiring is old. In order to select the proper size subpanel you must calculate. It holds separate circuit breakers from the main breaker panel.

The circuit loads placed upon the sub panel will determine the size of the sub panel as well. Use 1 1 4 inch pvc conduit for a 100 amp sub panel or 1 inch pvc conduit if the sub panel is 50 amps or less. Installing a sub panel for a garage electrical question. An electrical subpanel installs downstream from a home s main breaker panel.