7/29/2019 ECM216 BUILDING SERVICES Bab 1.7 Diversity Factor

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EDITED BY

AZUAN AHMAD FAUZI 2011803188

UITM PULAU PINANG MAC 2013

DIVERSITY FACTOR

Learning outcome

At the end of this lecture, the student should be able to : Calculate diversity factor Explain the important of diversity factor Sketch the schematic diagram of the wiring Identify the various devices involve

Explain the various term in illumination

Diversity Factor

Diversity factor: The ratio of the sum of the individual non-coincident maximumdemands of various subdivisions of the system to the maximum demand of the

complete system.

Diversity Factor = Total load at particular time

Total load installed

The diversity factor is usually smaller than 1. (a 70% diversity means that the deviceoperates at its nominal or maximum load level 70% of the time that it is connected

and turned on) Diversity factor is used to estimate the load of a particular node in the system.

Schematic diagram

A schematic is a diagram that represents the elements of a system using abstract,graphic symbols rather than realistic pictures. A schematic usually omits all details

that are not relevant to the information the schematic is intended to convey, and may

add unrealistic elements that aid comprehension.

Consumer Unit

The general disposition in a consumer unit for MCB:

Lighting and fan - 6A Immersion heater - 15 or 20A (depending on rating) Power socket radial circuit -15 or 20A (depending on rating) Power socket ring main - 30A (depending on rating) Air-conditioning 30A or 40A Cooker - 30A, 40A or 45A (depending on rating)

Example of single line schematic diagram, single phase; 240 V (house)