Where are vertical electrical chases located across continuous foam wall panels?

Vertical electrical chases in interlocking continuous foam panels are located 16 inches on center across the panel face, aligning directly with the embedded framing studs to provide a continuous wiring path from floor to ceiling.

Framing and wiring masonry basements traditionally requires standalone stud framing, sacrificing 4 to 6 inches of interior room perimeter and creating thermal bridges. Modern continuous insulation systems integrate built-in wire raceways directly into expanded polystyrene (EPS) panels, reducing wall assembly depth to just 2 to 2.5 inches while meeting prescriptive continuous insulation energy code requirements.

If you only do one thing: Map out electrical outlet box and switch locations before adhering panels, aligning vertical chases directly with supply drops to minimize foam modifications.

• Spacing and Alignment: Vertical chases run every 16 inches on center across the wall plane, aligning continuously when 24x48-inch panels are stacked and interlocked in standard running-bond configurations.
• Chase Depth and Dimensions: Raceways are molded roughly 3/4-inch deep into the EPS foam, allowing 12/2 or 14/2 non-metallic sheathed cable (NM-B) to sit safely behind 1/2-inch or 5/8-inch drywall.
• Horizontal Intersections: Built-in horizontal chases intersect the vertical raceways every 24 inches on center, forming a complete utility grid that eliminates the need to drill through framing members.
• Outlet Box Recessing: Standard shallow plastic junction boxes or single-gang flanged boxes mount into the panel by scoring a perimeter cut into the foam with a utility knife and clearing the opening with a drywall saw.
• Cable Pulling Sequence: Wiring runs through the preformed chase channels after adhesive cures (typically 24 to 48 hours for polyurethane construction adhesive), snaking freely between ceiling joists and wall outlets.

• Watch out for: Cutting into embedded polypropylene studs when carving junction box openings, which compromises the structural fastener pull-out capacity of the framing flange.
• Watch out for: Running oversized armored or metal-clad (MC) conduit through preformed chases without checking local electrical code setback requirements from the finished wall surface (typically 1-1/4 inches under National Electrical Code 300.4).
• Watch out for: Neglecting to seal electrical penetrations with low-expansion polyurethane foam, which can permit air leakage to bypass the continuous vapor and thermal boundary.

Calculate total square footage across the project area, then confirm local electrical code raceway requirements with a licensed electrician before hanging panels.

General information only, not medical advice. Decisions about health, treatment or wellbeing should be made with a doctor or other qualified healthcare professional.