Motor Control Centers & Starters
MCC installation, bussing, and field terminations; magnetic starters with overload protection set per NEC 430.32; and three-wire start-stop control wiring that does what the sequence says.
Motor starter field guide →Services · Tucson, Arizona
Motor Controls & VFD Installation in Tucson, AZ
When a motor stops, production stops. Arizona Electrical Solutions installs and commissions motor control centers, starters, and variable frequency drives across Tucson — equipment power, control wiring, drives, and the interlocks that make machinery behave — self-performed by electricians who work on industrial systems every week. Request a bid →
Motors & Drives
Controls that start, protect, and modulate equipment
Motor work spans a lot of ground: an MCC lineup for a plant, a single VFD on a pump, a starter replacement on a machine nobody makes parts for anymore, or the power and disconnect for equipment the mechanical contractor is setting next week. We install, bus, and wire motor control centers, install and wire VFDs and starters, and provide the equipment power, disconnects, and field terminations that go with them.
This is one part of our controls capability and the work we do as an industrial electrician in Tucson.
Variable Frequency Drives
VFDs installed and wired with conductors sized per 430.122, shielded output cable, 360-degree bonding, and the drive parameters and commissioning that decide whether the installation is quiet or a nuisance.
VFD field guide →Equipment & Process Power
Feeders, disconnects, and terminations for production machinery, pumps, fans, compressors, and process loads — coordinated with the equipment vendor's requirements before the machine arrives.
Industrial & warehouse →Scoping It
What makes a motor project go smoothly or badly
The drive is a box on a wall. These are the things that determine whether the equipment runs:
The downtime window
Most motor and drive work happens on equipment that is currently in service. When the line can stop, for how long, and what has to be back up by Monday drives the crew size, the sequence, and the price more than the hardware does.
Cable, bonding, and drive noise
VFDs are electrically noisy by nature. Shielded output cable, proper 360-degree bonding, and separation from control and communications wiring are what keep a new drive from causing problems in equipment that used to work fine.
Existing gear and available capacity
Adding drives or motors means checking feeder capacity, overcurrent protection, and available fault current at the gear it lands on — sometimes the honest answer is that the panel needs attention before the motor does.
Who programs what
We handle drive parameters, control wiring, and interlocks. Where a machine has a PLC or a vendor's proprietary control package, we coordinate with that vendor or your integrator so the boundaries are clear before start-up, not during it.
Commissioning
Nothing gets bumped until it's been checked
Rotation, voltage, overload settings, and control logic get verified before equipment turns — because a pump or a conveyor run backwards is a mechanical repair bill, not an electrical one. Our field team publishes the procedure we work to: verifying phase rotation and voltage, including the high-leg delta trap and disciplined bump testing.
We also megger motors and feeders where the situation calls for it — see insulation-resistance testing — before energizing equipment whose history nobody knows.
- Phase rotation and voltage verified before the first bump
- Overload elements sized and set to the motor nameplate
- Insulation resistance tested where condition is unknown
- Drive parameters set, documented, and left with the facility
- Interlocks and safety circuits function-tested with the operator
Where This Shows Up
Pumps, fans, plants, and production floors
Motor and drive work follows the equipment: booster and lift-station pumps for municipal and water clients, fans and air handlers on commercial mechanical systems, compressors and conveyors on production floors, and process equipment in manufacturing and distribution facilities.
Because we also self-perform the mechanical and the building controls, drives on HVAC equipment are one contract — and for public-works clients, this work sits inside our municipal & public capability.
- Water and wastewater pump stations and booster pumps
- Air handlers, exhaust fans, and cooling-tower drives
- Compressors, conveyors, and production machinery
- Machine relocations and equipment installations
- Troubleshooting and replacement of failed drives and starters
Self-Performed
Power in, control out
Feeders, gear, drives, and field wiring by the same crew — which is why nobody is standing around waiting for another contractor's electrician.
Upstream
Feeders and protection
The distribution behind the motor — feeder capacity, overcurrent protection, and fault-current ratings verified before new load is added.
Downstream
Field wiring and interlocks
Conduit, cable, disconnects, and control wiring to the equipment, coordinated with the mechanical and equipment vendors before start-up.
FAQ
Tucson motor control and VFD questions, answered
Do you install VFDs on existing equipment?
Yes — that is most of this work. We verify the feeder and protection can support the drive, install and wire it with shielded output cable and proper bonding, set and document the parameters, and commission it with your operators.
Is a VFD worth installing on a pump or fan?
Often, on loads that run at partial demand much of the time — the energy savings on variable-torque loads like pumps and fans are real. On constant-load equipment the case is weaker. We would rather look at the load than sell a drive by default.
Do you install and wire motor control centers?
Yes. We install, bus, and wire MCCs and terminate the field connections, including starters, overload protection set to the motor nameplate, and the control wiring behind them.
Do you do PLC programming?
We handle drive parameters, control wiring, interlocks, and commissioning. Where a machine runs on a PLC or a proprietary vendor control package, we coordinate with that vendor or your integrator and make the boundary explicit before start-up rather than during it.
Can the work be done on a shutdown or a weekend?
Yes, and it usually is. Motor and drive work happens on equipment that is in service, so we plan around your production window — including nights and weekends when a line cannot stop during the week.
Can you troubleshoot a drive or starter that already failed?
Yes. We troubleshoot and replace failed drives, starters, and control circuits, and we check what caused the failure — supply voltage, load, overload settings, or environment — instead of installing the same part to fail again.
Related Services
Work that usually comes with this one
One contractor carries the whole scope. See every service we self-perform.
Controls
Building and lighting controls, metering, motor controls, and commissioning.
Industrial Electrician
Heavy distribution, machine and process power, motor controls, and high-bay lighting.
Electrical Panel & Service Upgrades
Panelboard, switchboard, and service-entrance upgrades with load calcs, TEP coordination, and phased shutdowns.
HVAC & Mechanical
Equipment, ductwork, refrigerant piping, controls, ventilation, and start-up.
Adding drives, or replacing controls that failed?
Send us the motor nameplate, the equipment list, or the drawing. We'll scope the power, the drives, and the downtime window in one bid.
Request a Bid Call (520) 308-6235