Key takeaways
- Commercial electrical repair starts with a few clear questions on the phone, so the right electrician arrives with the right parts.
- The first job on site is making the problem safe. Finding the cause comes next, and it is not the same as finding the symptom.
- You should get a written price for the repair before the work is done, and a choice about when it happens if an outage is needed.
- A good repair ends with a record: what failed, what was replaced, and what else was noticed while the panel was open.
Commercial electrical repair is different from fixing a problem at home, mostly because of what is at stake. A dead circuit in a restaurant can stop the cooking line. A failed breaker in an office can take down the network closet. A tripped feeder in a warehouse can stop the dock. The repair itself may be small, but the business is losing money while it waits. Knowing what to expect from the call to the fix helps you make good decisions quickly, and it helps you judge whether the contractor you called is handling it well.
The first call: what you will be asked
A good dispatcher or electrician asks a handful of questions before anyone drives out. The answers decide who comes, what they bring and how fast it has to happen.
- What stopped working, and when did it start?
- Is there any burning smell, smoke, heat, buzzing or visible damage?
- Did a breaker trip, and does it trip again when it is reset?
- Is the whole building affected, one area, or one piece of equipment?
- Is the building open, and is there anything that cannot be without power?
- Who will meet the electrician, and where are the panels?
If there is smoke, a burning smell or a panel that is hot to the touch, treat it as an emergency: shut off power at the source if it is safe to do so, keep people away and call right away.
Our emergency commercial electrician page explains how urgent calls are handled.
On site: making it safe first
The first thing a licensed electrician does on arrival is make the situation safe. That can mean isolating a damaged circuit, locking out a piece of equipment, or shutting down part of a panel so nothing else is affected. In an occupied building, the electrician should tell the manager what is being shut off and why before doing it, so nobody is surprised when a room goes dark.
Sometimes making it safe also gets the business running again, for example by moving a critical load to a working circuit while the real repair is planned. That kind of temporary step should be described plainly as temporary, with the permanent fix priced separately.
Finding the cause, not just the symptom
Resetting a breaker is not a repair. A breaker trips for a reason: an overload, a short, a ground fault, a failing breaker, or a loose connection that is heating up. The electrician's job is to find which one it is. That usually means testing the circuit, checking the load on it, inspecting connections in the panel and at the equipment, and talking to the people who work there about what was running when it failed.
On commercial properties, the cause is often a change nobody connected to the electrical system: a new piece of kitchen equipment on an existing circuit, a space heater under every desk in winter, or rooftop equipment that was replaced with a larger unit. Finding that kind of cause is what keeps the same call from happening again next month.
Common causes behind commercial electrical repair calls
Every building is different, but the same few causes come up again and again on commercial repair calls. Knowing them helps you describe the problem on the phone and understand the diagnosis when it comes.
- Loose or corroded connections in panels, disconnects and equipment, which heat up under load until something fails.
- Circuits that were fine when installed but now carry loads that were added later.
- Breakers that have tripped many times and no longer hold their rating.
- Water getting into exterior boxes, rooftop disconnects or pole bases after a storm.
- Damaged cords and receptacles behind equipment that moves, such as kitchen lines and work benches.
- Underground circuit faults on parking lot and site lighting.
Several of these are slow problems that only become urgent when they finally fail. That is why the electrician may recommend checking related circuits while the panel is open, not just the one that stopped working.
Repair or replace
Sometimes the honest answer is that a repair will work but will not last. A panel with several damaged breakers, a feeder that has overheated along its length, or equipment that has failed more than once may be cheaper to replace than to keep repairing. When that is the case, you should hear both options with a written price for each, along with what each one leaves unsolved. The choice is yours, and a temporary repair that keeps the business open while a replacement is planned is often the right call.
A written price before the repair
Once the cause is known, you should get a clear description of the repair and a written price before the work is done. If more than one option exists, such as repairing a damaged section of a circuit or replacing a whole panel that has several problems, both should be explained with what each one does and does not solve.
At Wattsmith, every repair is priced in writing and approved before the work starts, and any change after that is priced and approved the same way. Many repairs are the same trade as electrical repair at home, only with more at stake when they wait.
When the repair needs an outage
Some repairs can be done while the building runs. Others need part of the system shut down, and in an occupied building the timing matters as much as the work. A restaurant may need the repair done after close. An office may prefer a weekend. A medical or dental office may need the work done when no patients are scheduled.
We schedule planned outages after hours and on weekends when the building needs it. The plan should say what will be off, for how long, and what has been done to protect anything that cannot lose power, such as refrigeration, network equipment or alarm panels.
Permits and inspections on repairs
Many small repairs, such as replacing a failed device with a matching one, do not need a permit. Larger repairs, such as replacing a panel, changing a service or adding circuits, usually do. Inside San Antonio, commercial electrical permits go through the City of San Antonio Development Services Department, and the suburban cities run their own permit offices. When a repair needs a permit, the electrical contractor should pull it and meet the inspector.
The record you should get
A finished repair should leave a record: what failed, why, what was replaced, and what else was noticed while the panel was open. That record matters for the next electrician, for the property manager's files, and sometimes for an insurance claim. If the panel directory was wrong or missing, it should be corrected while the electrician is there.
A repair call is also a chance to catch the next problem. Discolored breakers, loose connections on other circuits, and panels with no working space in front of them are worth writing down even if they are not fixed that day.
Reducing the next emergency
Most commercial emergencies start as small problems that nobody saw. Scheduled maintenance and an infrared thermography electrical inspection catch many of them early. Our maintenance agreements set the visits and the checks, and our commercial electrical services page covers the rest of what we do for businesses.