Illumination scheme for domestic wiring

1. Gandhinagar Institute
of Technology(012)
Subject : Elements of electrical engineering (2110005)
Active Learning Assignment
Branch : Civil
DIV. : G3
Prepared by : - Deepak Patel (160120106053)
Guided By: Prof. Piyush Pandya
Topic:- Illumination scheme for domestic premise

2. Outline:
1. Introduction
2. Important terms
3. Design of indoor lighting scheme
4. Illumination for domestic premise
5. Power distribution scheme of house wiring
6. Design consideration of electrical installation
7. Load calculation and selection of service
connection

3. Introduction
Illumination is the deliberate use of light to
achieve a practical or aesthetic effect. Lighting
includes the use of both artificial light sources
like lamps and light fixtures, as well as natural
illumination by capturing daylight.

4. Some basic terms of illumination
1. Luminous flux (lumen = lm)
This is the total light output of a light source. The
luminous flux is of particular importance, because it is
the quantity that is used to describe the "brightness" of
a light source.
2. Luminous intensity I (candela = cd)
Luminous intensity is the light flux of a lamp or light bulb
emitted in a specific direction.
3. Illumination E (lux = lx = lm/m²)
Illumination is divided by the light flux of a lamp into
lumen, where one lux is an illumination of one lumen
per square metre.

5. DESIGN OF INDOOR LIGHTING SCHEMES
1.Adequate illumination.
2.Uniform light distribution all over the
working plane.
3.Light of suitable colour.
4.Minimum hard shadow and glare.

6. Illumination for domestic premise:
Proper lighting can enhance task performance,
improve the appearance of an area, or have
positive psychological effects on occupants.
Indoor lighting is usually accomplished using
light fixtures and is a key part of interior design.

7. 1. Domestic loads mainly consists of houses,
residential buildings etc.
2. The procedure carrying out in electrification of
residential building is similar to electrification of
commercial building, only the load capacity
differs.
3. In case of a house, two wire phase supply is
sufficient as the amount of load is less which can
be entirely put on these supply lines.
4. The energy meter in case of residential
installation is single phase.

8. Power distribution scheme of house
wiring:

9. Design consideration of electrical installation
system for domestic buildings:
1. Proper planning of electrical installation is very
must.
2. Before going for electrical installation of
domestic building, the concern person should
have complete idea of load.
3. Since each of the domestic building has
different load requirement, different illumination
scheme should be adopted.

10. Load calculation and selection of service
connection:
1. Bulb point : 60W
2. Fluorescent tube : 60W
3. Ceiling fan : 60W
4. Exhaust fan : 100W
5. Socket outlet(5A) : 100W
6. Socket outlet(15A) : 1000W
Total load on one phase in amperes = Total
wattage on that phase/230
Acc. To this load, the size of incoming cable should taken

11. THANK
YOU