Electrical switch installation is an essential part of any electric or electronic circuit. Everyone is familiar with switches. In fact they are a very taken-for-granted feature of modern life. Therefore most people might not realize how many types there are, and how many functions they are involved in. Unless you are especially interested, it's not that important to understand switch science. This is because your licensed electrician knows how they work and which ones to apply to your job. It's probably enough for you to appreciate that they make possible a lot of great systems in your home or business.
TYPES OF SWITCHES
Switches are small devices which can make or break an electric circuit. They are either 'on' which is called 'closed' because closing a gap in a wire makes the electricity flow. Or they are 'off' which is called 'open' because when there's an open gap in a wire the electricity cannot not flow. Like traffic lights at a road intersection, they control the flow and direction of electricity in a circuit. They are thus controllers in the circuit. You have a lot of control over the jobs done by a circuit when many switches are installed
There are two main types of switches used in electrical and electronic circuits: