An electrician is a highly skilled professional who uses specialized equipment to install, connect, test, and maintain electrical systems for a variety of purposes, including climate control, security, and communications. They also install and maintain the electronic controls for machines in business and industry. Electricians must follow the National Electric Code and comply with State and local building codes. The primary responsibilities of an electrician include:

• Follow blueprints and diagrams to locate circuits, outlets, load centers, panel boards, and other equipment to insure that concealed wiring is installed before the completion of future wall, floors, and ceilings.
• Measure, cut, bend, thread, assemble, and install electrical conduit or wire, using such tools as hacksaw, pipe threader, and conduit bender.
• Pulls wire through conduit, assisted by insulation from terminal lead, and fastens wires together.
• Connect wiring to lighting fixtures and power equipment and install grounding leads.
• Test continuity of circuits to insure electrical compatibility and safety of components, using testing instruments, such as volt/ohm meter.
• Observe functioning of installed equipment or system to determine hazards and need for adjustments, relocation, or replacement.

Maintenance electricians spend much of their time in preventative maintenance. They inspect equipment to locate and correct problems before breakdowns occur. When working with complex electronic devices, electricians work with engineers, and engineering technicians.