These are classic signs of power quality problems, and in Texas commercial and industrial buildings, they’re far more common than most facility managers expect.
Power quality refers to how stable and clean the electrical supply is throughout your building’s distribution system. It’s not just about whether you have power. It’s about whether that power is consistent enough for your equipment to function as designed.
Three factors define it: voltage stability (are levels staying within acceptable range?), harmonic content (is the waveform clean or distorted?), and frequency consistency (is the supply steady at 60 Hz?). When any of those drift, every piece of equipment connected to your system feels it, even if the effects aren’t immediately obvious.
Electrical system instability tends to show up gradually, in ways that are easy to chalk up to aging equipment or operator error. Watch for these warning signs:
If you’re operating a warehouse, manufacturing plant, multi-tenant commercial building, or healthcare facility, any combination of these symptoms warrants a closer look. They’re not isolated inconveniences. They’re your system telling you something’s wrong.
Power quality problems don’t come from a single source. In most commercial and industrial buildings, they’re the result of several overlapping conditions.
Overloaded circuits are among the most straightforward culprits. Buildings accumulate equipment over time, and circuits that were sized for original loads often end up carrying far more than they were designed to handle.
Poor grounding introduces noise into the system and creates voltage reference problems that are especially damaging to sensitive electronics and control systems.
Harmonic distortion is increasingly common as buildings run more non-linear loads. Variable frequency drives, LED drivers, switching power supplies, and UPS systems all generate harmonics that distort the voltage waveform. Those distorted waveforms cause heat buildup in transformers and neutral conductors and interfere with equipment expecting a clean sine wave.
Unbalanced phases occur when three-phase loads aren’t distributed evenly across the system, resulting in uneven voltage that stresses motors and can cause dangerous overheating in the neutral conductor.
Aging infrastructure compounds all of the above. Older switchgear, distribution panels, and conductors weren’t designed for today’s electronic load profiles, and they’re less capable of managing the demands modern operations place on them.
Texas summers create electrical stress conditions that can push marginal systems into failure. When grid demand peaks on a 105-degree afternoon, voltage sags become more frequent across the board. At the same time, your commercial HVAC system is running at full capacity and cycling more aggressively than it does any other time of year, and every compressor startup creates an inrush current event that stresses your distribution system.
Industrial tenants and manufacturing operations add further complexity. Welding equipment, large motors, and automated systems create rapid load swings and inject harmonics that can degrade power quality for every other load on the same distribution system. In multi-tenant commercial buildings, one tenant’s electrical behavior affects everyone else on the same panel.
The window before peak summer demand arrives is the most strategic time to address these issues. Once temperatures climb and loads spike, you’re in reactive mode.
Is your building showing signs of electrical system instability? A&G Services provides power quality assessments for commercial and industrial facilities across the DFW area.
Power quality problems don’t stay contained. Their consequences compound over time.
Increased energy costs are often the first measurable impact. Harmonic currents and reactive power demand increase actual energy consumption beyond what your productive loads require, and that shows up on your utility bill every month.
Shortened equipment lifespan is the harder-to-see cost. Motors, drives, transformers, and electronics have rated lifespans that assume reasonably clean power. Chronic electrical system instability can cut that lifespan significantly, meaning you’re replacing capital equipment years ahead of schedule.
Production downtime in manufacturing or warehouse environments can cost thousands of dollars per hour. A power quality event that trips a drive or resets a PLC mid-process isn’t just a repair cost. It’s every minute your operation is down.
Safety hazards are the most serious consequence. Overheating conductors and transformers represent genuine fire risk, and overstressed equipment can fail in ways that create arc flash hazards for your team.
The only way to know what’s actually happening in your system is to measure it. A&G’s electrical maintenance and diagnostics process uses several tools to build a complete picture.
Power analyzers capture voltage, current, and power factor data over time. A single snapshot won’t catch intermittent problems. Trend logging over days or weeks reveals patterns that correlate with your operational schedule.
Harmonic monitoring measures the specific harmonic content in your system’s waveforms and identifies which loads are generating distortion and how severe it is.
Thermal imaging of panels, transformers, and connections reveals hot spots indicating overloaded conductors, poor connections, or equipment running above rated temperature. These are problems that are invisible to the eye but obvious with an infrared camera.
Voltage trend logging documents sags, swells, and transients, and helps correlate electrical events with the equipment complaints or process interruptions your team has been experiencing.
Not every power anomaly signals a systemic problem. A temporary voltage sag during a utility switching event might cause a nuisance trip without indicating anything wrong inside your building. The distinction matters because the response is different.
Chronic electrical system instability means your system is consistently operating outside acceptable parameters, and chronic problems don’t resolve themselves. They worsen as equipment ages and loads increase. Monitoring is the only reliable way to tell the difference. If your power analyzer shows recurring voltage deviations, consistently elevated harmonic distortion, or repeated transients at predictable times of day, you’re dealing with a condition that needs corrective action.
Corrections like harmonic filters, power factor correction equipment, panel upgrades, grounding improvements, and load balancing are far less disruptive and costly when they’re planned rather than forced by a failure.
Texas summer demand is predictable. The stress it puts on commercial and industrial electrical systems is predictable. What doesn’t have to be predictable is the outcome.
A&G Services provides power quality assessments for commercial and industrial facilities across the DFW area, combining monitoring, thermal imaging, and system analysis to give you an accurate picture of where your system stands and what it needs before peak season arrives. Learn more about our commercial electrical services and what a full assessment covers.
Schedule a power quality assessment before summer demand increases. Contact A&G Services.
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