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Electrical · Service & Distribution

Commercial Electrical Service & Distribution

Every building starts at the service. We design, install, and energize the incoming electrical service and the distribution system that carries power to every panel, circuit, and device — sized for today's load and tomorrow's expansion.

What We Provide

Service & Distribution — in detail

We design, install, terminate, and commission service & distribution for commercial and industrial facilities across Arizona — coordinated with our own underground, HVAC, and construction crews. Here is how the gear, feeders, and standby power that carry a building's load actually come together.

Utility Coordination & Service Entrance

  • Utility coordination and point-of-connection — We work directly with the serving utility (such as TEP or Trico) to establish the point of connection, confirm the available voltage and capacity, complete the service application, and schedule the meter set — so power is ready when the building is.
  • Service entrance, metering, and CT cabinets — We furnish and install the service-entrance equipment, meter sockets, and current-transformer (CT) cabinets the utility requires, built to their spec and the NEC, and we carry it through the inspection and utility release that energizes the service.
  • Overhead or underground service — Whether the service drops from a utility pole or is fed underground from a transformer, we install the masts, risers, conduits, and conductors — and self-perform the trenching and duct bank when the service is underground.
  • Service upgrades, re-feeds, and capacity additions — When an existing facility outgrows its service, we increase the amperage, replace or add gear, and re-feed the building — often phased around an operating facility to keep downtime to a minimum.

Switchgear, Switchboards & Panelboards

  • Low-voltage switchgear and switchboards — These are the main distribution assemblies that take incoming power and split it into feeders. We set, bus, and terminate switchgear and switchboards, then torque and test every connection to manufacturer and NEC requirements.
  • Distribution and branch panelboards — Panelboards break power down to the circuits that feed lighting, receptacles, and equipment. We install and label distribution and branch panels, land the feeders and circuits, and leave accurate panel schedules for the people who maintain the building.
  • Bus duct and busway — For high-amperage runs and flexible distribution, we install bus duct and plug-in busway — common in industrial and warehouse spaces where equipment locations change over time.
  • Fault-current and coordination per our engineering — Gear has to be rated for the available fault current and coordinated so the correct device trips first. We install equipment to match the short-circuit and coordination study from our in-house engineering, and apply the arc-flash labeling.

Transformers & Feeders

  • Dry-type and pad-mounted transformers — Transformers step voltage to what the building needs — 480V down to 208/120V, for example. We set dry-type transformers indoors and coordinate pad-mounted transformers along with their pads, grounding, and terminations.
  • Feeder design, routing, and installation — Feeders are the large conductors that move power between gear. We size, route, and install feeders in conduit, cable tray, or busway, then pull, terminate, and test them with our own electricians.
  • Conductor and conduit sizing — Correct sizing keeps voltage drop, heat, and cost in check. We size conductors and raceways to the load, the run length, and the NEC, verified against the engineered drawings before anything goes in the ground or the wall.
  • Grounding and bonding — A properly grounded and bonded system is the foundation of electrical safety. We install the grounding electrode system, equipment grounding, and bonding throughout the service and distribution.

Standby & Emergency Power

  • Generators and paralleling switchgear — When the utility goes down, generators keep critical systems running. We set generators, run the power and control wiring, and install paralleling switchgear where multiple units share the load.
  • Automatic transfer switches (ATS) — An ATS senses a utility loss and transfers the building to generator power automatically, then back when utility power returns. We install and wire ATS units and coordinate their operation with the gear.
  • Emergency and legally-required standby systems — Code requires certain loads — egress lighting, fire alarm, life-safety — to stay powered. We install NEC Article 700/701 emergency and standby systems, kept separate and identified exactly as the code requires.
  • Load shedding, metering, and monitoring — On generator power, not every load can run at once. We install load-shed controls, metering, and monitoring so the system prioritizes critical loads and the owner can see exactly what is happening.

Where It Applies

Markets we serve

From our base in Tucson, we build and upgrade services and distribution for office buildings, industrial plants, and municipal facilities.

The Design-Build Advantage

Designed, self-performed, and accountable

Switchgear has long lead times and one shot at inspection. The engineers who size the service sit down the hall from the crews who set it, so submittals, TEP and Trico coordination, and the energize date stay on one schedule.

See our electrical engineering
  • Sized with our in-house engineering for real load plus future growth
  • Long-lead switchgear and gear identified and procured early
  • Underground feeders self-performed by our own crews
  • Energized, tested, and inspected to the NEC and the AHJ
  • One team from utility coordination through commissioning

FAQ

Service & distribution questions, answered

Sizing a project? Our free voltage drop, transformer sizing, and wire ampacity calculators use the same NEC tables our engineers do — and our panel schedule builder keeps the documentation straight.

What does service and distribution mean in commercial electrical work?

The service is where utility power enters the building — the service entrance, metering, and main disconnect. Distribution is everything that carries power from there to the loads: switchgear, switchboards, panelboards, transformers, feeders, and busway. Together they form the backbone every other electrical system in the building depends on — see our full electrical scope for how the rest connects.

How long does commercial switchgear take to get?

Custom switchgear and switchboards are long-lead equipment — depending on the manufacturer and configuration, lead times can run from several months to a year or more. We identify long-lead gear during design with our in-house engineering and release it for order early, so the equipment arrives when the schedule needs it instead of stalling the project.

Can you upgrade an electrical service in an occupied building?

Yes. We phase service upgrades and re-feeds around operating facilities — temporary power, off-hours cutovers, and utility outage windows coordinated in advance — so tenants and production keep running while the amperage, gear, or feeders are increased.

Do you coordinate with TEP and Trico on new services?

Yes. We handle the utility side end to end: the service application, point-of-connection and available-capacity confirmation, CT metering and service-entrance equipment built to the utility's spec, and the scheduling of the meter set and release that energizes the building. For the whole process — who builds what, and what gets inspected before release — see our TEP new service requirements guide.

How do I know what size electrical service my building needs?

Service size comes from an NEC Article 220 load calculation — connected loads, demand factors, and a realistic allowance for future growth. Our in-house engineering runs the load calc, sizes the service and feeders, and backs it with the short-circuit, coordination, and arc-flash studies the gear has to be rated for — so you buy the capacity you need without paying for capacity you don't.

Do you install generators and automatic transfer switches?

Yes. We set generators, install automatic transfer switches and paralleling switchgear, and wire NEC Article 700 and 701 emergency and standby systems — including the load-shed controls and metering that keep critical loads powered through an Arizona monsoon outage. The life-safety loads those systems carry are part of the same scope.

More Electrical

Related capabilities

Explore the rest of our electrical scope, or see the full electrical services overview.

Have a project that needs service & distribution?

Tell us the load and the timeline. We'll flag gear lead times and utility coordination up front, not at month six.

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