Service Entrance Transitions
When it comes to integrating power safely and efficiently into your facility, service entrance transitions are a critical component. At Andrews Fabrication, we specialize in the design and fabrication of custom service entrance transitions that connect utility power to building electrical systems with precision, durability, and full code compliance.
Any size, indoor or outdoor, Stainless steel, Aluminum, Galvanized or powder coated mild steel we can build exactly what you need. With bolt on, welded in, or gasket rain tight mounting options, we can fit these any way you like.
Whether you’re outfitting a new construction project or upgrading an aging electrical infrastructure, our custom solutions are built to accommodate a wide range of voltages, layouts, and environmental conditions. We serve contractors, developers, engineers, and utility providers throughout Texas and the Gulf Coast.
What Are Service Entrance Transitions?
A service entrance transition refers to the junction point where power from a utility company enters a building’s electrical distribution system. This typically involves multiple components such as enclosures, conduit entries, busbars, breakers, grounding, and safety barriers.
Transitions must be designed to:
Protect internal wiring and electrical components from external hazards
Comply with utility regulations and local building codes
Maintain proper separation between high-voltage and low-voltage systems
Facilitate easy access for maintenance or inspection
Custom fabrication ensures the transition is properly aligned with the layout of your facility, whether you’re connecting to a transformer, generator, or direct utility service.
Custom-Built for Code Compliance
Every municipality and utility company has its own specifications for service entrance construction. That’s why Andrews Fabrication works closely with our clients to ensure every detail meets or exceeds those standards.
We have extensive experience fabricating service entrance enclosures, metering cabinets, tap boxes, generator docking stations, and more — all tailored to integrate seamlessly into your electrical system.
Our products are:
Built to meet UL 508A, NEMA, and utility-specific requirements
Available in NEMA 1, NEMA 3R, NEMA 4, and NEMA 4X ratings
Fabricated from aluminum, stainless steel, or powder-coated steel
Equipped with grounding lugs, copper bus bars, cable supports, and mounting panels
Applications and Use Cases
We design service entrance transitions for a wide range of applications, including:
Commercial Buildings: Office complexes, shopping centers, and warehouses
Industrial Facilities: Refineries, plants, and manufacturing centers
Multifamily Housing: Apartment buildings, townhomes, and condos
Institutional Facilities: Hospitals, universities, and government properties
Utility Interconnects: For power distribution or generator backup integration
No matter the project size or scope, Andrews Fabrication has the expertise to deliver a safe and scalable solution.
Built for Reliability and Safety
Power transitions are mission-critical points in any facility. Failure at this junction can cause serious downtime, electrical hazards, and costly repairs. That’s why our products are engineered for long-term reliability and maximum safety.
Every transition box and enclosure is:
Designed with internal compartments to separate voltage levels
Equipped with lockable doors and hinged access panels
Built to withstand harsh environments including heat, moisture, and dust
Fabricated with precision-welded seams and weather-resistant gaskets
Need a solution for high-amp loads? No problem. We fabricate enclosures with bussed copper bar systems capable of handling 600A, 800A, 1600A, and beyond.
Seamless Integration with Your System
Our service entrance transitions are designed to integrate with existing or new infrastructure, including:
Main Switchboards
Pad-Mounted Transformers
Generator Transfer Switches
Cable Tap Boxes
Metering Panels
We also offer engineering support and CAD layout assistance to help you plan and visualize the perfect fit — reducing on-site challenges and speeding up installation.
Fast Turnaround and Local Expertise
Located just outside Houston, our fabrication facility is fully equipped to handle projects of all sizes with quick lead times and Texas-strong reliability. With decades of experience, our team understands both the engineering and the practical installation challenges of service entrance transitions.
Need a rush order or a last-minute modification? We’re flexible, responsive, and ready to help.
Why Choose Andrews Fabrication?
✅ UL 508A Certified Panel Shop
✅ Custom NEMA-Rated Enclosures
✅ Built in Houston, Texas
✅ Decades of Metal Fabrication Experience
✅ Trusted by Utilities, Engineers & Contractors Statewide
We’ve earned the trust of clients across industries — from hospitals and universities to energy providers and developers. If you need a solution that’s built to code and built to last, Andrews Fabrication delivers.
Contact us today!
If you’re planning a new build or need a retrofit solution, contact Andrews Fabrication today to request a quote or schedule a consultation. We’ll help you design the perfect service entrance transition for your electrical system — built for safety, performance, and long-term durability.
📞 Phone: 281-372-0440
🌐 Website: www.andrewsfabrication.com
📍 Location: Katy, Texas