The HOM24L70SCP isn’t actually a 24-circuit panel — it’s a 2-space, 4-circuit configuration. Square D’s model numbering throws contractors for a loop here. At 9.3” x 4.8” x 3.2” and just 3.8 pounds, this 70-amp load center targets small-scale applications where space matters more than circuit count.
For Montana contractors adding circuits to workshops, garages, or small commercial spaces, this compact panel delivers exactly what’s needed without overbuilding. The panel works for residential sub-panels in garages and workshops, adding circuits to existing main service panels, and light commercial power distribution. It also handles service-entrance distribution where a 70A feeder is sufficient.
Electrical Specifications That Drive Installation Decisions
The HOM24L70SCP runs on 120/240V single-phase power with a 10,000 AIC short circuit rating. That 10kA rating covers most residential and light commercial applications but won’t cut it for heavy industrial loads.
| Specification | Value |
|---|---|
| Amperage | 70 A |
| Spaces/Circuits | 2 spaces / 4 circuits max |
| Voltage | 120/240 V AC |
| Phase Configuration | 1-phase, 3-wire |
| Short Circuit Rating | 10 kA (10,000 AIC) |
| Wire Compatibility | Al: 12-3 AWG, Cu: 14-4 AWG |
| Bus Bar Material | Tin-plated aluminum |
The panel accepts Square D Homeline standard circuit breakers and tandem breakers for achieving the full 4-circuit capacity. Those tin-and-copper-plated aluminum busbars provide solid conductivity and resist corrosion — critical in Montana’s temperature swings.
Montana Installation Realities
This NEMA 1 indoor-only enclosure requires surface mounting with fixed main lugs. No flush mount option. Feeders enter from the top termination point, though they can approach from any direction — just can’t rotate the device itself.
For Montana’s climate, that indoor-only rating matters. Garages and workshops need proper weather sealing. Outdoor installations require a separate weatherproof enclosure, adding cost and complexity. The panel needs a separate ground bar kit like the PK3GTA1 if not included.
The compact footprint shines when retrofitting older buildings or squeezing electrical upgrades into tight mechanical rooms. Perfect for that workshop addition where the main panel’s already maxed out but only needs a few dedicated circuits.
Homeowners give it 4.6 stars across 447 combined reviews at Home Depot and Lowe’s. Contractors appreciate the main lug configuration when adding circuits without needing a main breaker.
The Square D Advantage
Square D ranks among the best circuit breaker brands for reliability, quality, and safety features, with roots dating to 1896 as a flagship brand of Schneider Electric. The brand’s rigorous testing standards and durability make it a trusted choice across residential, commercial, and industrial applications.
All Homeline products carry UL 67, CSA, and IEC compliance certifications. Square D designs everything to meet and exceed National Electrical Code requirements. That certification stack matters when inspectors show up.
Comparable options include the Eaton BR 70A 2-Space 4-Circuit, Square D’s premium QO 70A series with visual trip indicators, the Siemens EQ 60A for smaller loads, or stepping up to the Homeline 100A 6-Space 12-Circuit for more capacity.
People Also Ask
What’s the actual circuit capacity of the HOM24L70SCP? Despite the model number, it’s a 2-space panel supporting 4 circuits maximum with tandem breakers. The “24” in the model confuses everyone — it means 2 spaces, 4 circuits.
Can this panel handle Montana’s outdoor conditions? No — it’s NEMA 1 rated for indoor use only. Outdoor installations need a weatherproof enclosure or different panel entirely.
What size wire works with this load center? Aluminum wire from 12-3 AWG or copper from 14-4 AWG. Size your feeders based on the 70A capacity and local code requirements.
Does it include circuit breakers? No — the housing, cover, and bus bar come standard, but breakers, lugs, and accessories sell separately.
Frequently Asked Questions
Q: What’s the actual circuit capacity of the Square D Homeline HOM24L70SCP?
Despite the confusing model number, the HOM24L70SCP is a 2-space load center that supports 4 circuits maximum when using tandem breakers. The “24” in the model name represents 2 spaces and 4 circuits, not 24 circuits as many contractors assume.
Q: Can I use this Square D panel for outdoor installations in Montana?
No, the HOM24L70SCP has a NEMA 1 rating for indoor use only. For outdoor applications, you’ll need a different panel with weather-resistant rating or install this unit inside a separate weatherproof enclosure.
Q: What size wire can I connect to this 70-amp Square D load center?
The HOM24L70SCP accepts aluminum wire from 12-3 AWG or copper wire from 14-4 AWG. Wire sizing should match the 70-amp capacity and comply with local electrical codes.
Q: Does the Square D Homeline HOM24L70SCP come with circuit breakers included?
No, this load center includes only the housing, surface-mount cover, and aluminum bus bar. All circuit breakers, lugs, and additional accessories like ground bar kits must be purchased separately.
Q: What’s the short circuit rating for this Square D panel?
The HOM24L70SCP has a 10 kA (10,000 AIC) short circuit rating, which covers most residential and light commercial applications. This rating won’t be sufficient for heavy industrial loads or areas with higher available fault currents.
Q: What type of breakers work with the Square D Homeline load center?
The HOM24L70SCP accepts Square D Homeline standard circuit breakers (like HOM120, HOM150) and Homeline tandem breakers. The panel is specifically tested and listed only for Homeline breakers, not other brands or Square D’s premium QO line.
Q: How does this compare to Square D’s QO series panels?
The Homeline HOM24L70SCP is Square D’s residential-grade option with tin-plated aluminum bus bars, while the QO series features copper bus bars and visual trip indicators at a premium price. Both carry full UL listing, but QO is marketed as Square D’s “World’s Finest” premium line.
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