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	Maintenance electricians spend much of their time doing preventive maintenance. Maintenance electricians periodically inspect equipment, and locate and correct problems before breakdowns occur. Electricians may also advise management whether continued operation of equipment could be hazardous. |

Electricity is essential for light, power, air-conditioning, and refrigeration. Electrical contractors install, connect, test, and maintain electrical systems for a variety of purposes, including climate control, security, and communications. They also may install and maintain the electronic controls for machines in business and industry. Although most electrical contractors specialize in construction or maintenance, a growing number do both.

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Electrical contractors work with blueprints when they install electrical systems in factories, office buildings, homes, and other structures. Blueprints indicate the locations of circuits, outlets, load centers, panel boards, and other equipment. Electrical contractors must follow the National Electric Code and comply with state and local building codes when they install these systems.

In factories and offices, they first place conduit (pipe or tubing) inside designated partitions, walls, or other concealed areas. They also fasten to the walls small metal or plastic boxes that will house electrical switches and outlets. They then pull insulated wires or cables through the conduit to complete circuits between these boxes. In lighter construction, such as residential, plastic-covered wire usually is used instead of conduit.

Regardless of the type of wire used, electrical contractors connect it to circuit breakers, transformers, or other components. They join the wires in boxes with various specially designed connectors. After they finish the wiring, they use testing equipment, such as ohmmeters, voltmeters, and oscilloscopes, to check the circuits for proper connections, ensuring electrical compatibility and safety of components.

Electrical contractors also may install low voltage wiring systems in addition to wiring a building’s electrical system. Low voltage wiring involves voice, data, and video wiring systems, such as those for telephones, computers and related equipment, intercoms, and fire alarm and security systems. Electrical contractors also may install coaxial or fiber optic cable for computers and other telecommunications equipment and electronic controls for industrial equipment.

Some other topics that pertain to electrical contractors include:

• Electrical Licenses
• Subcontractors
• Electrical Components
• National Electrical Code
• Electrical Maintenence
• Electrical Inspectors

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Indiana Audio & Video         Mississippi Attempts To Restore Municipal Workings Audio, RM, 48 Kbps, 4:22:00 AM, 10/11/2005 Reporter Chris Arnold reports on the city of Waveland, Miss., lost all but one of its municipal vehicles in Hurricane Katrina. Source: National Public Radio

Indiana External Sites         Indiana Office of Utility Consumer Counselor - Electric Indiana Statewide Association of Rural Electric Cooperatives ... Vectren (formerly Southern Indiana Gas and Electric Company) ... Indiana Office of Utility Consumer Counselor - Electric Harvard Electricity Policy Group · Indiana Industrial Energy Consumers, Inc. (INDIEC) ... Indiana Electric Utilities · Electric Informa