An electrician specializes in everything to do with installing, maintaining and repairing electrical installations in buildings. If you are looking for an electrician, you can also go to an installation company, although the term installation company can evoke something of confusion. The term installation company is used by companies that direct their services to various technical installations in buildings, including electrical systems. To ensure that you have an electrical supply, it is best to check the website of the electrician of the installation company to find out which specific services they provide. An electrician or an installation company that specializes in electricity should be able to handle jobs such as repairing power failures, installing new electricity in the house and renewing or expanding group boxes.