1 slides on drawing lecture-1 demonstration on drawing ‘fittings and fixture layouts’,...

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Slides on Drawing Lecture-1

Demonstration on drawing ‘Fittings and Fixture layouts’,

‘Conduit layouts’ and ‘Switchboard connection diagrams’ of simple architectural structures.

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Electrical Design of a Civil Layout: Steps to be followed (0)

Civil Layout:

The input layout to the

Electrical Engineer to

perform Electrical

Design.

Door

3


Fittings &

Fixture Layout:

Demonstration of exact

location for different

fixtures to be used.

1F1

C1TS1

- -

TV1

F2A4

2

A2

A1

A3

SS3

SS1

SS2Let’s find out from the symbol sheet what different symbols represent and write it in your sheet

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Conduit Layout:

Demonstration & optimization of the electrical connectivity between source of energy and loads.

1

2

FL L

S

S

F

LS

L

S

- -

L

C1

C2

C1

C6C1

C2

C1

C2

C4

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Switchboard Connection Diagram:

Demonstration of

detailed connections

between each and

every loads under

a particular switchboard.SS1

SB 1

A2A1 F1

R

C1TS1SS2 A4

2x1.5mm2

A3 F2

R

SS3

SB 2

2x2.5mm2

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Distribution BoardConnection Diagram:

Demonstration of detailed connection between main source of energy and different switchboards with proper safety equipments.

)

) ) )

SB 1 SB 2 SB 3

10 15 10

40

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Exact location (3D information) for different Fixtures are demonstrated.

The input information is the ‘Purpose of use’ of a particular area in civil layout (i.e. whether it’s a bedroom or a kitchen).

Sufficient amount of lighting, cooling and connectivity for external loads (i.e. 2/3 pin sockets) need to be provided.

Location of the switchboard is an important issue as well. Keep the switch close to the entrance when people stay inside the

room For store and others you may keep it outside.

Fittings & Fixture Layout

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The target is to provide an optimum design from both economic and electrical point of view.

There are many scopes to improve this, so try to be innovative.

Calculate all the loads for the fixtures and find suitable wire to be used.

Choose appropriate conduit from tables.

Always remember that conduits are more expensive than wires. So the layout should focus more to optimize use of conduits, the length of conduits.

Try to avoid coarse wires if possible.

Conduit Layout

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Demonstration of each and every switchboard with connectivity to different loads through proper switching methods.

Explaining which outlet is governed by which switchboard.

Representation of exact wire size and numbers.

Representation of safety equipments (i.e. fuses & circuit breakers ) with proper ratings.

Switchboard Connection Diagram

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Demonstration of each and every switchboard with connectivity to the main Distribution Board.

It’s not necessary to draw conduits to each switchboard. In large designs, only one conduit may carry the wires for a group of swithcboards.

Demonstration of protective devices with proper current ratings.

Location of MDB/SDBs are significant issue.

Distribution Board Connection Diagram

Assignment 1

We’ll have to perform the electrical design of a single room which might be used as a store room.

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Fittings and Fixture Layout (Example 1)

LEGEND

Switchboard (Concealed)

Wall Bracket Light at Lintel

Level

1

A1

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Conduit Layout (Example 1)

LEGEND


Wall outlet at Lintel Level

L

C1

C1=2x1.5mm2

L

1Why arrow?

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Switchboard Connection Diagram (Example 1)

SB 1

A1

2x1.5mm2

Assignment 2

Let’s add some additional fixtures so that the store of Assignment 1 can be used as living purpose as well.

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LEGEND



Level

1

A1

A2

F1Ceiling Fan

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1

L

L F

C3

C1

C1

LEGEND



C3=3x2x1.5mm2

L

F Ceiling Fan outlet

C1=2x1.5mm2

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SB 1

A2

2x1.5mm2

A1 F1

R

Assignment 3

Let’s modify the above room so that it can be used as a complete bed room.

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LEGEND



Level

1

A1

A2

F1Ceiling Fan

T1ST1

TS1

- - TV1

Fluorescent Wall Light Fitting

ST 2-Pin 5A Socket at Table Height

Level

TS 2-Pin 5A Socket at Skirting Level

for TV

- -TV 2-Pin TV Antenna Socket

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1

L

L F

C6

C1

C2

LT

S

- -

C1

C2

C1

LEGEND



C2=4x1.5mm2

L


C1=2x1.5mm2

S

T

Socket outlet at Skirting Level

Socket outlet at Table Height Level

C23=6x(2x1.5mm2)

- - 2-Pin TV Antenna Socket

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SB 1

A2

2x1.5mm2

A1 F1

R

T1ST1TS1

Assignment 4

Now, let’s perform electrical design for the

two-room layout shown below.

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LEGEND



Level

1F1

Ceiling Fan

T1

TS1

- -

TV1

Fluorescent Wall Light Fitting

SS 2-Pin 5A Socket at Switchboard

(SB) Level

TS 2-Pin 5A Socket at Skirting Level

for TV

- -TV 2-Pin TV Antenna Socket

F2A4

2

A2

A1

A3

SS3

SS1

SS2

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1

2

FL L

S

S

F

LS

L

S

- -

L

C1

C2

C1

C23C1

C2

C1

C2

C4

LEGEND



C2=4x1.5mm2

L


C1=2x1.5mm2

S Socket outlet at Skirting/SB Level

C4=2x2.5mm2

C23=2x(6x1.5mm2)

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SB 1

A2A1 F1

R

T1TS1SS2SS1 A4

2x1.5mm2

A3 F2

R

SS3

SB 2

2x2.5mm2

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End of Slides on Drawing Lecture-1

1 slides on drawing lecture-1 demonstration on drawing ‘fittings and fixture layouts’,...

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