This document discusses two electrical wiring concepts: 1) Two-way staircase wiring which allows controlling a light from two locations using two three-terminal switches. The circuit diagram shows how the line, neutral and switch terminals are connected to allow turning the light on/off from either switch. 2) Tube light wiring which requires additional components like a choke or electronic ballast, starter and wires beyond just connecting to mains supply. Wiring diagrams show how to connect these components for single tube light installations with electromagnetic or electronic ballasts.

1. Elements of Electrical Engineering
Name : Harsh Parmar
Branch : FYIT1 A Batch
Id No : 16BEITG005

2. Staircase wiring
Tube light Wiring

3. Staircase wiring

4. How to Control a Lamp / Light Bulb from Two places Using Two Way
switches For Staircase Lighting Circuit
 Why Two way light switch wiring is important in Staircase circuit
Staircase circuit connection wiring is different form one way control light switch
and we did not use one way switches in this connection because we need to
controlled or switch off/on the lamp form both places top and down. For that we
control lamp form two places using two way switches. In short this connection
we use to save energy and to control or switching lamp / light bulb form both
places

5.  How Two way control light bulb connection is works
In this wiring connection we use two way switches in which we have three
terminals, in these terminals one is common and two for connection. we can
use it for many connection using different connection methods. For example
we use it changing flow of current positive to negative etc.

6.  How To Control a Lamp / Light bulb form two places using 2 way
switches
The circuit of controlling lamp form two way switch is simple, in this connection
we use two way switches, for this first of all connect the neutral wire to the lamp
or bulb socket and then connect the phase or Line wire to the common terminal
of the first two way switch, the do connection between the other terminals of
first and 2nd switch terminals with one another as shown in below diagram. In
last connect a wire between lamp socket 2nd terminal and 2nd switch common
terminal as shown below image plus Diagram

7. Diagram

8. This is a stair case circuit diagram by which we can control a bulb from two
different places. We can switch OFF and Switch ON the bulb from both
switches at the same time. in other words we can control (OFF or ON) the bulb
from upper and lower switches.

9. Tube light Wiring

10. Tube light is not connected in the supply main directly. Although it operates
at 230 V, 50 Hz, some auxiliary electrical components are used to insert in
this installation to support the tube light operational principle. The total
electrical components for single tube light installation are
 Choke: it is electromagnetic ballast or electronic ballast.
 Starter: Small neon glow up lamp
 Switch
 Wires

11.  Wiring Diagram of Single Tube Light Installation with
Electromagnetic Ballast

12.  How to Install a Single Tube Light with Electromagnetic Ballast
 From the junction box the neutral wire is not taken out to the switch board, rather it is taken out from the
junction box and carried out to the port 2 of the tube light, as per figure above. A wire connects port 2 and
pin 1 of the terminal 2 already. So the neutral wire is continued from port 2 to pin 1 of terminal 2.
 The live wire or phase is taken from the junction box to the switch board. The live wire is connected to the
one terminal of the switch. From another terminal of the switch the wire is carried out up to tube light set up
and connected to port 1.
 One terminal of choke or ballast is connected to port 1 and another terminal is connected to pin 1 of
terminal 1.
 One end of a starter is connected to pin 2 of terminal 1 and another end of the starter is connected to the pin
2 of terminal 2.

13.  As no starter is used in case of electronic ballast application, wiring diagram is little
bit changed.
 Electronic ballast has six ports, two ports out of six ports are for input and rest four
ports are for output ports. Suppose they are named port 1 and port 2 for input; port
3, port 4, port 5 and port 6 are for output of the ballast.
 From the junction box the neutral wire is taken out from the junction box and
carried out to the port 2 of the electronic ballast to connect, as per figure above.
 The live wire or phase is taken from the junction box to the switch board. The live
wire is connected to the one terminal of the switch. From another terminal of the
switch, the wire is carried out up to tube light set up and connected to port 1 of the
electronic ballast.

14. •Let, the color of wires from port 3 and port 4 are black, and from port 5 and port 6 are red or
any other color.
•Port 3 and pin 2 of terminal 1 and Port 4 and pin 1 of terminal 1 are connected.
•Port 6 and pin 2 of terminal 2 and Port 5 and pin 1 of terminal 2 are connected.
[NB: incoming voltage of port 1 and port 2 of the electronic ballast is only 230 V,
50 Hz. But output ports 3, 4, 5 and 6 give very high voltage at the time of switch
ON, may be 1000 V at 40 kHz or more. When tube light starts to operate, output
ports voltages become below 230 V at 40 kHz or more.]