What is an Electrician?
An electrician is a skilled trades worker who assembles, installs, tests, and maintains electrical wiring, equipment, appliances, and fixtures with hand and power tools. The same occupation carries the alternative titles electrical technician and wireman, which mark a difference in employer wording rather than in work. The work spans home lighting circuits at one end and street lights and electrical control systems at the other. Every task on that span ends in conformance to the National Electrical Code (NEC), the standard that makes an installation lawful.
Electrical repairs and emergency call-outs sit inside the occupation rather than beside it. An emergency electrician is not a separate job classification, since the term describes a tradesperson who answers urgent outages or hazards outside normal hours. The urgency changes the schedule and nothing about the wiring standard applied to the repair. Customers read the emergency label as an availability promise and not as a distinct trade.
What does an Electrician do?

An electrician works by making electrical power safe and usable in buildings and equipment. The worker first reads the blueprints, then installs the components and runs conduit and cable to each load. The wiring system is inspected and tested before it is energized. The energized system is troubleshot whenever a fault appears, and the faulty circuitry is repaired or upgraded. Home electrical services show the full sequence inside one dwelling. Wiring a new kitchen, upgrading a breaker panel, and fixing a dead outlet all follow the order of plan, install, test, and repair. The same order holds on a construction site, where an office's power and data network is run from the drawings. The outcome in every setting is functional electrical service that meets code.
What are the Types of Electrician?

There are six main types of electrician based on the setting and the scope of the systems they wire. The types are residential electrician, commercial electrician, industrial electrician, emergency electrician, maintenance electrician, and solar electrician, which are briefly discussed below.
The table below compares the six types by the setting they serve, the supply they wire, and the party that hires them.
Type of Electrician | Setting | Supply and Wiring | Who Hires the Type |
|---|---|---|---|
Residential electrician | Individual homes | Single-phase 120/240 V household panelboards and flexible cable | Homeowners, for every dwelling task that must pass inspection |
Commercial electrician | Offices, shops, and other large spaces | Three-phase 208/240/480 V power through rigid conduit and heavy-duty panels | Building owners, when a space changes tenant or use |
Industrial electrician | Factories, plants, and warehouses | Three-phase 480 V lines and industrial panelboards feeding heavy machinery | Plant managers, because machine downtime is lost output |
Emergency electrician | Any building with an urgent outage or hazard after hours | The faulted circuit, isolated and made safe before power returns | Customers, for speed of response |
Maintenance electrician | Existing electrical systems in occupied buildings | Aging installations with worn contacts, loose terminations, and overloaded circuits | Facility teams, to find faults before they stop a building |
Solar electrician | Buildings with on-site generation | Photovoltaic arrays whose direct current an inverter converts before it joins the supply | Property owners, for on-site generation |
Common misreading | The six types are six separate trades | One trade divided by setting, not by skill | The customer chooses by setting, not by credential |
1. Residential Electrician
A residential electrician is a tradesperson who wires and services individual homes. The home runs on 120/240 V single-phase circuits fed through household panelboards and flexible cable. The residential electrician installs the lighting circuits of a new house or replaces an aging breaker panel. Homeowners hire this type for every dwelling task that must pass inspection.
2. Commercial Electrician
A commercial electrician is a trades worker who fits out offices, shops, and other large spaces. The large space draws 208/240/480 V three-phase power through rigid conduit and heavy-duty panels. The commercial electrician runs that conduit from the building drawings, and connects the fire alarm and lighting systems. Building owners engage this type when a space changes tenant or use.
3. Industrial Electrician
An industrial electrician is a specialist who keeps factories, plants, and warehouses energized. The plant runs heavy machinery on 480 V three-phase lines and industrial panelboards. The industrial electrician installs the machine circuits, repairs motor and control wiring, and restores a stopped line. Plant managers depend on this type because every hour of machine downtime is lost output.
4. Emergency Electrician
An emergency electrician is a practitioner who answers urgent outages and hazards after hours. The outage arrives as a dead panel, a burning smell, or a tripped main that will not reset. The emergency electrician isolates the fault, makes the circuit safe, and restores power. Customers call this type for speed of response rather than for a different skill.
5. Maintenance Electrician
A maintenance electrician is the worker who keeps an existing electrical system in working order. The existing system ages through worn contacts, loose terminations, and overloaded circuits. The maintenance electrician inspects the installation, tests the protection, and upgrades the parts that no longer meet the load. Facility teams keep this type on staff so that faults are found before they stop a building.
6. Solar Electrician
A solar electrician is an installer who connects photovoltaic (PV) generating systems to a building supply. The PV array produces direct current, and an inverter converts it before it joins the supply. The solar electrician mounts the array, wires the inverter to the panel, and proves the interconnection safe. Property owners choose this type for on-site generation.
Reading the six types by setting lets a customer match the job to the electrician whose systems, voltages, and hours fit it.
What are the Duties of Electrician?

There are six main duties of an electrician that turn a design into a safe, working supply. The duties are electrical installation, electrical repair, electrical wiring and rewiring, lighting installation, electrical panel upgrade, and generator installation, which are set out one by one below.
1. Electrical Installation
Electrical installation is the duty of fitting new components into a building supply. The components include outlets, switches, fixtures, and control devices. The installer positions each component from the plan, connects it to its circuit, and tests the circuit before handover. Installers follow this sequence so that a new component never energizes an unsafe path.
2. Electrical Repair
Electrical repair is the task of finding and correcting a fault in an energized system. The fault shows as a dead outlet, a tripping breaker, or a flickering light. The tradesperson diagnoses the cause with testing equipment, isolates the affected circuit, and replaces the failed part. Repair crews restore power only after the corrected circuit passes a fresh test.
3. Electrical Wiring and Rewiring
Electrical wiring and rewiring is the work of running conductors through a structure. The conductors carry power from the panel to every load, and rewiring replaces conductors that are aged, undersized, or damaged. The worker sizes the wire to the load, routes it through walls and conduit, and terminates it to code. Wiring crews treat a whole-home rewire as the largest residential job.
4. Lighting Installation
Lighting installation is the job of mounting and connecting lighting systems. The lighting system ranges from a single ceiling fixture to a commercial lighting layout. The lighting electrician selects the fixture for the space, wires it to a switched circuit, and sets the controls. Lighting electricians take on this duty most in new construction.
5. Electrical Panel Upgrade
Electrical panel upgrade is the duty of replacing or enlarging a building's main distribution board. The distribution board becomes undersized when new appliances, chargers, or machinery raise the load. The tradesperson installs the higher-capacity panel, transfers every circuit to a new breaker, and re-labels the board. Service crews schedule this upgrade before a load increase rather than after a nuisance trip.
6. Generator Installation
Generator installation is the task of connecting a standby power source to a building's supply. The standby source takes over when the utility supply fails. The installer mounts the generator, wires the transfer switch, and tests the changeover under load. Installation crews finish only when the building switches over without back-feeding the grid.
Grouping the six duties by purpose shows that every one of them serves the safe delivery of power at the site where the work is done.
Where does a Electrician Work?

An electrician works primarily on construction sites, in residential and commercial buildings, and occasionally outdoors. The construction site calls for a wholly new wiring system installed from the plan. The occupied building calls instead for maintenance and troubleshooting of equipment already in place. The outdoor assignment adds weather and public safety to the task. The employer side of the setting is concentrated in one industry. The Bureau of Labor Statistics (BLS) recorded 455,910 of 631,080 electricians, about 72%, employed by building equipment contractors in 2017. Manufacturing, utilities, local government maintenance, and employment services make up the remaining employers. Each employer places the electrician in the setting its own equipment demands. Each of those employers hires only a worker who has entered the training and licensing route of the trade.





