Your Electrical System
Electrical work is straightforward so you can repair or alter the system in your home safely and easily by following simple rules. Before you start a project, become familiar with the basics of electricity and household electrical circuits. Review electrical safety. Survey your home's electrical system and understand it before you begin any project. If you are wary of any aspect of the project, review the appropriate content on this website to find answers. This section introduces some principles of home electrical systems to help you become familiar with the wiring in your home. It begins with an overview of residential wiring. It also shows you what to look for when you inspect your system and how to work safely.Projects in System Inspection
The knowledge you need
In this section of our website you'll learn:
--How to test for power and make sure power is off
--How circuits work and which parts of your house are protected by each fuse or circuit breaker in the service panel
--How switches and receptacles work
--How your total system is grounded
--How each electrical box is grounded
--How a ground fault circuit interrupter (GFCI) works and how to test one
--How to determine the purpose and function of any wire you may encounter.
A surface inspection
Most electrical problems are easy to spot once you know what to look for. You can spot many problems without removing a cover plate or fixture. The inspection we describe helps you find and correct dangerous situations and electrical code violations that are found in many homes.
Getting more information
This site covers the common situations encountered in home wiring. If your house has some unusual installations, seek additional advice. You might find help at a home center or hardware store. Or call your local building department and schedule an appointment with an electrical inspector. Or you may decide to hire a professional electrician to inspect your home's electrical system and recommend necessary work to correct any problems.