Electricians install, repair, and maintain the wiring and equipment that delivers power to buildings

An electrician's core work is making sure electricity gets where it needs to go safely. That means running wire through walls, connecting outlets and switches, installing light fixtures, and making sure everything meets code. They also troubleshoot problems when something stops working — a breaker that keeps tripping, an outlet that's dead, flickering lights — and they fix it by finding what's wrong and replacing or rewiring the faulty part.

The work varies depending on the type of electrician and the setting. A residential electrician might wire a new kitchen or replace an old panel in a house. A commercial electrician installs systems in office buildings or factories, which often means larger-scale work and more complex wiring. An industrial electrician works on machinery and heavy equipment. All of them follow the National Electrical Code (NEC), which sets safety standards for how electrical work must be done.

Key Takeaways

  • Electricians install new wiring and outlets, repair broken circuits and fixtures, and maintain electrical systems to keep them safe and working.
  • The job requires reading blueprints, understanding electrical codes, and using specialized tools like multimeters and wire strippers.
  • Most electricians complete a four-year apprenticeship before they can work independently, and many states require a license to do electrical work.
  • Residential, commercial, and industrial electricians do different types of work, though the core skills overlap.
  • Electricians often work on-site at customer locations, which means the job involves travel, scheduling, and working in different environments.

The day-to-day tasks electricians perform

On any given day, an electrician might be running new circuits to a kitchen remodel, replacing a faulty breaker in a panel, installing recessed lighting, or diagnosing why a room has no power. They read blueprints to understand where wiring needs to go, use a multimeter to test voltage and find faults, strip and connect wire, find conduit (the tubing that protects wire), and test their work to make sure it's safe before they leave.

Much of the work is physical — climbing ladders, working in crawl spaces, bending wire, and carrying equipment. But it also requires problem-solving. When something isn't working, the electrician has to trace the circuit, test different points, and figure out whether the problem is a loose connection, a failed component, or something else entirely. They document what they find and what they did, because that record matters for safety and for the next person who works on the system.

How electricians learn the trade

Most electricians start as apprentices, typically through a union program or a contractor. An apprenticeship usually lasts four years and combines classroom instruction with on-the-job training under a licensed electrician. The classroom covers electrical theory, code requirements, safety, and math. The job site is where they learn to actually do the work — running wire, making connections, troubleshooting real problems.

After completing an apprenticeship, an electrician becomes a journeyman and can take the licensing exam in their state. The exam tests knowledge of the National Electrical Code and practical skills. Some states also require continuing education to keep a license current. A few electricians go on to become master electricians, which requires additional experience and another exam, and allows them to run their own business and train apprentices.

Licensing and legal requirements

Most states require electricians to be licensed before they can do electrical work for pay. The specific requirements vary — some states have a single electrician license, others separate residential and commercial licenses, and a few allow unlicensed work under certain conditions. Generally, you need to complete an apprenticeship, pass an exam, and renew your license every few years.

Licensing exists because electrical work is dangerous if it's done wrong. Bad wiring can cause fires, shocks, or electrocution. The code and the licensing system are designed to make sure the person doing the work knows how to do it safely. When you hire an electrician, checking that they're licensed in your state is one way to know they've met a minimum standard.

Tools electricians use every day

An electrician's toolkit includes basic hand tools — screwdrivers, pliers, wire strippers, a hammer — plus specialized electrical tools. A multimeter measures voltage, current, and resistance, and it's essential for diagnosing problems. A voltage tester tells you whether a wire is live (carrying current). A fish tape helps pull wire through walls and conduit. A conduit bender shapes metal tubing to fit the space.

Larger jobs might require power tools like a drill, a reciprocating saw, or a hole saw. Many electricians also carry a headlamp, a flashlight, and a ladder. The specific tools depend on the type of work — a residential electrician's kit looks different from an industrial electrician's — but the core set is similar across the trade.

Different types of electrical work

Residential electricians work in homes and small apartment buildings. They install outlets, switches, and light fixtures; wire kitchens and bathrooms; upgrade panels; and troubleshoot problems. The work is usually smaller-scale than commercial, and the code requirements are less complex, though they still explore.

Commercial electricians work in office buildings, retail spaces, hospitals, and other large structures. They install more complex systems — fire alarm wiring, backup generators, large panels that serve the whole building — and often work from detailed blueprints. The work is usually bigger and the systems are more intricate.

Industrial electricians work on machinery, motors, and heavy equipment in factories and plants. They need to understand not just wiring but also how the equipment operates, and they often work on systems that run continuously. This type of work usually pays more but requires additional training beyond the basic apprenticeship.

When and why you might call an electrician

You call an electrician when you need new wiring, when something electrical isn't working, or when you want to add capacity — more outlets, a new circuit, an upgraded panel. Common reasons include a breaker that keeps tripping (a sign the circuit is overloaded or there's a fault), an outlet that doesn't work, flickering lights, or wanting to add a new appliance that needs its own circuit.

You should also call an electrician if you're doing a renovation and need to move outlets or add new ones, if you're installing a major appliance like an electric range or heat pump, or if you suspect an older home's wiring is unsafe. An electrician can inspect the system, tell you what needs to be fixed, and do the work to code.

Frequently Asked Questions

Do I need a license to do electrical work myself at home?

It depends on your state and what you're doing. Most states allow homeowners to do electrical work in their own home without a license, but some require a permit and inspection. A few states require a licensed electrician for any work. Check your local building department before you start. Even if it's legal, electrical work is dangerous — if you're not trained, hiring a licensed electrician is the safer choice.

What's the difference between a journeyman and a master electrician?

A journeyman electrician has completed an apprenticeship and passed the licensing exam — they can do electrical work independently. A master electrician has additional years of experience (usually five to ten more) and has passed a more advanced exam. Masters can run their own business, hire and train apprentices, and often handle more complex projects. Both are licensed professionals.

How long does it take to become an electrician?

The standard apprenticeship is four years of combined classroom and on-the-job training. After that, you take the licensing exam to become a journeyman. If you want to become a master electrician, add another five to ten years of experience. Some accelerated programs exist, but four years is the norm and the requirement in most states.

Why does electrical work cost so much?

Electricians charge for their time, informed, and the cost of materials. They've spent years training, they carry liability insurance, and they're responsible for making sure the work is safe and meets code. If something goes wrong with electrical work, the consequences are serious — fire, injury, or death. The cost reflects that responsibility and the skill required to do it right.

Can an electrician work on any type of electrical system?

Not necessarily. A residential electrician is trained for home wiring but may not be may have access to for industrial machinery or high-voltage systems. A commercial electrician can usually handle residential work but might not have the specialized training for industrial equipment. When you hire an electrician, make sure they have experience with the type of work you need done.