What Are the Signs of Electrical Issues in Commercial Buildings?

February 25, 2025

Electrical systems are the backbone of any commercial building, powering everything from office equipment to security systems. However, electrical problems can develop over time, leading to safety hazards, increased energy costs, and even business disruptions. Identifying warning signs early can prevent costly repairs and ensure the safety of employees, customers, and assets.


Here are some of the most common signs of electrical issues in commercial buildings and what they mean.

1. Frequent Circuit Breaker Trips

If your building’s circuit breakers are frequently tripping, it’s a sign that your electrical system is overloaded or experiencing short circuits. Commercial spaces often have high-power demands, and an outdated electrical panel may struggle to keep up.

Potential Causes:

Overloaded circuits due to increased power usage

Faulty wiring or damaged breakers

Short circuits caused by electrical faults

Solution: An electrician can assess whether your system needs a panel upgrade or additional circuits to handle the load safely.

2. Flickering or Dimming Lights

Lights that flicker, dim, or buzz are not just an annoyance—they may indicate a more serious underlying electrical issue.

What It Could Mean:

Loose wiring connections

Voltage fluctuations or power surges

Overloaded circuits affecting power distribution

Solution: A professional electrician can inspect wiring and connections to identify the root cause and prevent further issues.

3. Burning Smell or Scorch Marks on Outlets

A burning odor, especially near outlets or electrical panels, is a red flag that should never be ignored. It could indicate overheating wires, melting insulation, or electrical arcing—all of which pose a serious fire hazard.

Immediate Action Required:

Turn off power to the affected area

Avoid using the outlet until inspected by a professional

Contact a licensed electrician immediately

4. Warm or Discolored Outlets and Switches

If outlets, switches, or electrical panels feel warm to the touch or show discoloration, it may signal excessive heat buildup due to faulty wiring or overloaded circuits.

Why This Happens:

Loose or corroded wiring

Overloaded circuits drawing too much power

Faulty electrical components

Solution: Have an electrician inspect and replace any damaged outlets or wiring to prevent electrical fires.

5. Unexplained Power Outages or Equipment Failures

Frequent power outages or malfunctions in computers, HVAC systems, or other critical equipment can indicate unstable power distribution or wiring problems.

Possible Causes:

Failing electrical panel or outdated wiring

Power surges damaging sensitive electronics

Loose or damaged electrical connections

Solution: Installing surge protection, rewiring problem areas, or upgrading your electrical system can prevent future disruptions.

6. High Energy Bills Without Explanation

A sudden spike in electricity costs without any changes in usage could indicate hidden electrical inefficiencies.

Potential Causes:

Old or faulty wiring wasting electricity

Outdated electrical panels struggling to distribute power efficiently

Phantom loads from outdated or malfunctioning equipment

Solution: Conducting an energy audit with a licensed electrician can help identify and fix inefficiencies to reduce costs.

7. Sparks When Plugging in Devices

Seeing sparks when plugging in appliances or office equipment is a warning sign of potential electrical hazards.

Why This Happens:

Loose wiring inside the outlet

Worn-out or damaged outlets

Overloaded circuits struggling to handle demand

Solution: An electrician can replace faulty outlets and ensure the wiring is secure to prevent dangerous short circuits.

8. Rodent or Pest Damage to Wiring

If you notice chewed wires or signs of rodent activity near electrical components, your building’s wiring could be compromised. Damaged wires increase the risk of short circuits, power failures, and fires.


Solution: Have an electrician inspect and replace damaged wiring, and address any pest control issues to prevent future damage.

Protect Your Business with Proactive Electrical Maintenance

Ignoring electrical issues in a commercial building can lead to safety risks, equipment failures, and costly repairs. If you notice any of these warning signs, don’t wait for the problem to worsen—take action now. At K-CO Electric, we specialize in diagnosing and repairing commercial electrical issues, ensuring your business operates safely and efficiently. Contact us today to schedule an inspection and keep your electrical system in top shape!

Share by: