Square D by Schneider Electric Homeline 100 Amp Outdoor Main Lug Load

The Square D by Schneider Electric Homeline 100 Amp Outdoor Main Lug Load Center is a compact panel designed for outdoor electrical distribution in residential and commercial setups. Housed in a welded sheet steel enclosure with a baked enamel gray finish, this NEMA 3R-rated box provides durable outdoor circuit protection in a manageable 8.88 by 3.75 by 12.57-inch footprint.

Internally, the panel features a tin-plated aluminum bus bar paired with distributed neutral bars to help keep wiring neat and tidy during installation. It functions with a plug-on neutral design and utilizes main lug connections. These lugs accommodate wire sizes from 6 AWG up to 2/0 AWG for either copper or aluminum conductors, offering practical flexibility when running feeder lines.

For electrical performance, the unit is UL Listed and rated for 120/240 VAC with a 22 kA breaking capacity. While the physical chassis includes 6 spaces, it can support up to 12 circuits when configured with tandem breakers, allowing you to maximize circuit density in smaller installations.

Keep in mind that this is a main lug panel designed strictly for surface mounting, so it does not include a dedicated primary disconnect breaker. With 6 built-in spaces, it is intended for smaller subpanel duties rather than large installations that require dozens of individual full-size breaker slots.

Verdict: This Square D Homeline load center is an excellent choice for anyone needing a reliable, compact outdoor subpanel for a garage, shed, or small commercial outbuilding. Its sturdy NEMA 3R housing and 12-circuit tandem capability provide dependable power distribution in a space-saving format.

• Brand: Schneider Electric (Square D Homeline)
• Current Rating: 100 Amp
• Voltage Rating: 120/240 VAC
• Interrupt Rating: 22 kA
• Enclosure Type: NEMA 3R (Outdoor, welded sheet steel, surface mount)
• Bus Bar Material: Tin-plated aluminum
• Spaces / Circuits: 6 spaces, expandable to 12 circuits with tandem breakers
• Wire Range: 6 AWG to 2/0 AWG (Copper or Aluminum)
• Dimensions: 8.88 in x 3.75 in x 12.57 in
• Certification: UL Listed

A great fit if you:

• Need an outdoor-rated NEMA 3R electrical panel for an exterior wall or outbuilding.
• Want to run up to 12 circuits using space-saving tandem breakers.
• Are working with 6 AWG to 2/0 AWG copper or aluminum wiring.
• Need a surface-mount subpanel for residential or light commercial power needs.

Consider something else if you:

• Require a large main panel with more than 6 standard spaces.
• Need an integrated main shutoff breaker directly inside the load center.
• Prefer a flush-mount interior electrical panel.

Can this load center be installed outside?
Yes. It features a welded sheet steel NEMA 3R enclosure with a baked enamel gray coating designed specifically for outdoor use.

How many total circuits can this panel support?
The panel has 6 physical spaces and can support up to 12 total circuits when tandem breakers are used.

What wire types and sizes are compatible with the main lugs?
The main lugs accept either copper or aluminum wire ranging from 6 AWG to 2/0 AWG.

What is the voltage and interrupt rating for this unit?
It is rated for 120/240 VAC with a 22 kA breaking capacity and is UL Listed.