Modular Electrical Houses (E-Houses) & Control Rooms

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Modular E-Houses & Electrical Buildings

Prefabricated power distribution buildings, electrical equipment shelters, and control room enclosures. Engineered for medium-voltage switchgear, transformers, VFDs, and control systems — delivered ready for energization.

Call (800) 326-4403 or Email Sales@MH-USA.com

Modular e-house electrical building
15kV–38kV
Medium Voltage
NEMA 3R/4
Weather Protection
IEEE/NEC
Code Compliance
6–12 Weeks
Typical Lead Time

What Is a Modular E-House?

A modular E-House (electrical house) is a factory-built, walk-in enclosure designed to house electrical power distribution equipment including medium-voltage switchgear, transformers, motor control centers (MCCs), variable frequency drives (VFDs), protection relays, metering equipment, and power distribution panels. Unlike conventional electrical rooms that require extensive on-site construction, E-Houses arrive with equipment pre-installed, wired, and tested — ready for connection to incoming power and outgoing feeders.

Material Handling USA designsand delivers E-Houses for utilities, oiland gas facilities, mining operations, water treatment plants, data centers, manufacturing facilities, and any application requiring organized, protected, accessible electrical equipment housing. Every E-House is engineered by licensed electricalandstructural engineers to meet IEEE, NEC, NFPA, and local utility standards.

Interior of an E-House with medium-voltage switchgear

E-House Configurations

We engineer E-Houses for applications ranging from simple distribution substations to complex integrated power and control buildings.

Power Distribution E-Houses

Medium-voltage switchgear (15kV, 25kV, 35kV), transformers, and low-voltage distribution panels in a weather-protected, walk-in enclosure. Designed for utility substations, industrial plant power distribution, and renewable energy collection points.

Motor Control Center (MCC) Buildings

Climate-controlled enclosures housing MCCs, VFDs, soft starters, and associated control equipment. Engineered for the heat dissipation, cable routing, and maintenance access requirements of motor-heavy industrial facilities.

Control Room Buildings

Integrated power and process control buildings with operator workstations, SCADA/DCS systems, HMI displays, communication equipment, and UPS power. Designed for 24/7 staffing with proper HVAC, lighting, and ergonomic design.

Portable Power Distribution

Skid-mounted E-Houses for temporary or relocatable power distribution — construction power, mining operations, oil field drilling, and disaster response. Designed for crane or trailer transport with quick-connect power terminations.

Engineering & Safety Standards

E-House showing safety featuresand electrical equipment

Every E-House is designed to meet or exceed NEC (NFPA 70) electrical installation requirements, IEEE C37 switchgear standards, NFPA 70E arc-flash safety guidelines, and applicable utility interconnection standards. Structural engineering meets IBC requirements for your geographic location including wind, seismic, snow, and flood zone specifications.

Safety features include arc-flash rated ventilation systems (per IEEE C37.20.7), emergency egress doors at both ends, fire detection and suppression systems (clean agent or dry chemical), emergency lighting, HVAC with redundancy for critical installations, cable tray systems with fire-stop penetrations, and grounding systems meeting IEEE 80 (substation grounding) requirements. Every E-House ships with a comprehensive factory acceptance test (FAT) report documenting functional testing of all equipment.

Why Choose a Modular E-House?

Reduced Field Time — Equipment arrives pre-installed, wired, and tested — eliminating months of on-site electrical construction in challenging field conditions.
Factory Quality — All assembly, wiring, and testing occurs in a controlled factory environment with documented quality assurance at every step.
Integrated Design — Electrical, structural, HVAC, fire protection, and lighting are all designed and coordinated by a single engineering team.
Faster Energization — Site work (foundation, incoming power, outgoing feeders) proceeds concurrently with factory manufacturing — cutting total project time 40–60%.
Relocatable Option — Skid-mounted E-Houses can be relocated to new sites as power distribution needs change — critical for mining, oil/gas, and construction.
Turnkey Testing — Factory acceptance testing (FAT) verifies all equipment functionality before shipment — reducing on-site commissioning time and risk.
E-House delivery and installation at an industrial site

Arc-Flash Safety Built In

Every E-House includes arc-flash rated construction per IEEE C37.20.7 with properly sized pressure relief vents, arc-resistant switchgear options, and equipment working space clearances per NEC Article 110. Our designs incorporate arc-flash analysis results to ensure safe working conditions for maintenance personneland proper PPE category labeling.

Frequently Asked Questions

What voltage levels can E-Houses accommodate?
We design E-Houses for low-voltage (480V–600V), medium-voltage (5kV–38kV), and combined voltage systems. The most common configurations house 15kV or 25kV switchgear with 480V secondary distribution. Custom configurations for utility transmission voltages up to 38kV are available.
How long does an E-House take to build?
Typical lead times are 6–12 weeks from design approval — depending on size, equipment complexity, and long-lead equipment procurement. The E-House structure itself manufactures in 4–6 weeks; switchgear and transformer procurement often determines the overall timeline.
Can equipment be pre-installed at the factory?
Yes — that’s one of the primary advantages. Switchgear, transformers, MCCs, VFDs, protection relays, and control panels can all be installed, interconnected, and tested in the factory before shipment. This significantly reduces field installation time and risk.
What are the foundation requirements?
E-Houses are typically set on reinforced concrete foundations with embedded anchor bolts — designed byour structural engineers based on the E-House weight, equipment loads, and site soil conditions. For relocatable installations, we use steel skid bases that sit on grade or concrete pads.
Do E-Houses include fire suppression?
Fire detection is standard in all E-Houses. Fire suppression systems — typically clean agent (FM-200, Novec 1230) or dry chemical — are available for critical installations. For oil-filled transformers, we include spill containment and may require deluge systems per NFPA 850.

Need an E-House for Your Power Distribution?

Get a free engineering consultation — Material Handling USA designsand delivers modular E-Housesand electrical buildings nationwide.

Headquartered in Salt Lake City, UT • Serving customers nationwide
Local service areas: Salt Lake City • Provo • Ogden • Park City • St. George • Logan • Lehi • Orem