A two way electrical switch can have multiple uses in a home environment. A 2 way switching connection means you can control an electrical equipment like bulb by two switches placed at different places generally used in the staircase.
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What is 2 way switch. Installing a two way electrical switch is not a difficult job to do yourself. Two way switch can be operated from any of the switch independently means whatever be the position of other switch onoff you can control the light with other switch. This is the simplest type of switch. A 2 way switch means there is another switch controlling the same light. The three terminals are usually named com l1 and l2 but sometimes com 1 way and 2 way are also used. The four way switch is used between two three way switches to provide control for an outlet or light fixture from three or more different locations.
In one switch position the com terminal is connected to l1. If a light switch is 1 way this means it is just an onoff switch. This makes for a safe protected circuit by having all grounds intact. All ground wires bare copper are all now connected incoming ground load ground and switch ground. A two way light switch is a simple single pole changeover switch with three terminals. There are 3 basic types of switches that are used for domestic purposes.
The neutral in this sketch is the black wire. When you want to make a connection with one terminal the connection with the other is broken. The green screw on the 2 way switch is for the ground so all ground wires should be connected as seen below. One of the terminals can be connected to either of the remaining two but not both at the same time. Hello two way switching is used to operate a lamp or device from two locations in the example below the power from the fuse bypasses s2 and continues to s1 the through the made solid line back to s2 then through the made solid line to the light. In contrast a two way switch is basically two one way switches combined into one.
Logically it cant be done as both switches would need to be on for the circuit to work power the bulb that is but a two way switch system means that either switch should be able to turn on the bulb. So what have we accomplished. For example you can use this device to install a dimmer slider that operates not just the light but also a ceiling fan. It is a standard single pole switch with three terminals. These are typically labelled com l1 and l2 some may label the l1 and l2 positions as 1 way and 2 way. When i say 2 way swithces i mean a switch with two copper screws.
In the other switch position it changes over so that com is connected to l2. Before proceeding an important component called a two way light switch is the main element of the 2 way switching irrespective of the type of wiring used. If you want to have control from more than three locationsfor example five locationsyou would still use two three way switches one on each end and three four way switches between the two.
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