Smarter Overhead Power Distribution for Flexible Facilities

Manufacturing never stops moving—and neither should the power infrastructure that supports it.

Equipment gets upgraded, robots migrate, and lines get re-balanced to handle new products. Yet in many facilities, the electrical infrastructure remains static—fixed conduit runs that can’t keep up with the pace of change.

That’s where modular Overhead Power Distribution systems such as USA TrackBusway^® come in. By relocating power overhead, engineers gain flexibility to adapt as layouts evolve. The goal isn’t just flexibility-it’s smarter, code-compliant design that anticipates the next reconfiguration before it happens.

Let’s talk through what that means in practice.

Step 1 — Right-Sizing the Busway System 

Determining a busway system’s ampacity is typically driven by the total connected load. As busway ampacity increases, conductor mass, enclosure size, structural support requirements, and installation cost all increase significantly. A more efficient approach is to introduce additional feed points, reducing busway ampacity while still meeting the total connected load.

In flexible busway systems, such as USA TrackBusway^®, abutting segments can be mechanically joined without establishing electrical continuity until a conductive joiner insert is installed. Factory-installed end blocks isolate each section by default.

Consequently, rather than increasing overall system ampacity to accommodate a small number of heavier loads, engineers can distribute power more intentionally by supplying dedicated feeds only where higher capacity is required instead of oversizing the entire installation.

Individual Track Busway rows can be segmented and powered from multiple feed points—for example, splitting a run at mid-length and introducing a second feed. These feed points can incorporate localized overcurrent protection, allowing each section to be protected independently while reducing the number of breakers required in the upstream panel and keeping the system compact.

The result: a smaller, lighter system that delivers flexible power without excess copper or complexity.

Step 2 — Choose Between Single-Phase and Three-Phase Configurations

The next design decision involves selecting the type of electrical distribution the workspace requires. Both single-phase and three-phase systems have a place on a modern production floor—it’s a matter of matching each to the right application and load.

Single-Phase Busway: Simple, Fast, and Stackable

For most assembly, fabrication, and general manufacturing spaces, single-phase busway systems such as Track Busway provide more flexibility than many engineers realize.

Each run carries two hot conductors and one neutral, supporting 120V (1-pole) or 240V (2-pole) circuits with ease.

The advantage comes in how those circuits can be expanded. Because each single-phase run supports two separate legs, engineers can stack additional runs above to add up to two more independent circuits.

Equally valuable, the flip circuit capability built into 1-Pole Power Tap-Off Units allows teams to change which leg of the busway power is drawn from. Simply rotate the plug to balance the load across circuits—no rewiring, no downtime.

In many cases, single-phase busway delivers the required functionality with greater flexibility and lower system complexity than three-phase alternatives.

Three-Phase Busway: For True Three-Phase Loads

For heavier equipment that genuinely requires balanced three-phase power, typically motors or motor-driven machinery—a three-phase Track Busway is the correct choice.

Each run carries three hot conductors and a neutral, allowing engineers to draw 1-pole, 2-pole, or 3-Pole Power Tap-Off Units from the same run of busway.

However, unless a piece of equipment truly requires three-phase service, single-phase distribution often provides the same functionality with greater modularity.

Design Tip: Use Three-Phase Only Where Required

In practice, three-phase busway should be specified only for equipment that genuinely requires it, such as compressors, pumps, or motorized conveyors.

For everything else, single-phase is usually the smarter choice. It’s lighter, easier to expand, and allows you to stack additional runs above to create more circuits as your facility grows.

This mix-and-match strategy keeps the system compact and cost-effective without sacrificing capacity.

Think of single-phase busway as your everyday workhorse—and three-phase as the specialist you call in when motors demand it.

The Payoff: Flexibility Without Compromise

Modular busway isn’t just about convenience—it’s about designing smarter electrical infrastructure that grows with the operation. 

By applying NEC tap rules correctly in accordance with Article 368, keeping runs compact, and matching power type to the load, engineers can design leaner systems that deliver both compliance and adaptability.

USA TrackBusway^® embodies that approach: a modular, code-approved platform that eliminates unnecessary bulk, simplifies change-outs, and helps facilities reconfigure power infrastructure quickly as layouts evolve.

When production changes next month, power won’t be what holds you back.

About USA TrackBusway®

USA TrackBusway^® manufactures modular, plug-in overhead power distribution systems engineered for UL 857 Busway compliance. Our pre-wired systems deliver flexible, code-approved power wherever it’s needed—supporting applications up to 600 V.

Explore Track Busway power solutions at trackbusway.com.