Slides on Drawing Lecture1 Demonstration on drawing Fittings

Slides on Drawing Lecture-1 Demonstration on drawing ‘Fittings and Fixture layouts’, ‘Conduit layouts’ and ‘Switchboard connection diagrams’ of simple architectural structures. 1

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 2

Electrical Design of a Civil Layout: Steps to be followed (1) Fittings & Fixture Layout: Demonstration of exact location for different fixtures to be used. Let’s find out from the symbol sheet what different symbols represent and write it in your sheet F 2 A 4 A 3 SS 3 2 SS 2 A 1 SS 1 1 F 1 TS 1 TV 1 -- C 1 3

Electrical Design of a Civil Layout: Steps to be followed (2) Conduit Layout: Demonstration & optimization of the electrical connectivity between source of energy and loads. C 1 L L F C 2 2 S L S C 4 C 2 L C 1 S F C 6 1 C 2 S L -- C 1 4

Electrical Design of a Civil Layout: Steps to be followed (3) Switchboard Connection Diagram: 2 x 2. 5 m m 2 SB 1 Demonstration of detailed connections between each and every loads under SS 1 SS 2 TS 1 C 1 a particular switchboard. SB 2 R R 2 x 1. 5 mm 2 A 1 A 2 F 1 SS 3 A 4 F 2 5

Electrical Design of a Civil Layout: Steps to be followed (4) Distribution Board Connection Diagram: 40 ) Demonstration of detailed connection between main source of energy and different switchboards with proper safety equipments. 10 ) 15 ) SB 1 SB 2 10 ) SB 3 6

Fittings & Fixture Layout n Exact location (3 D information) for different Fixtures are demonstrated. n 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). n Sufficient amount of lighting, cooling and connectivity for external loads (i. e. 2/3 pin sockets) need to be provided. n Location of the switchboard is an important issue as well. n n Keep the switch close to the entrance when people stay inside the room For store and others you may keep it outside. 7

Conduit Layout n The target is to provide an optimum design from both economic and electrical point of view. n There are many scopes to improve this, so try to be innovative. n Calculate all the loads for the fixtures and find suitable wire to be used. n Choose appropriate conduit from tables. n Always remember that conduits are more expensive than wires. So the layout should focus more to optimize use of conduits, the length of conduits. n Try to avoid coarse wires if possible. 8

Switchboard Connection Diagram n Demonstration of each and every switchboard with connectivity to different loads through proper switching methods. n Explaining which outlet is governed by which switchboard. n Representation of exact wire size and numbers. n Representation of safety equipments (i. e. fuses & circuit breakers ) with proper ratings. 9

Distribution Board Connection Diagram n Demonstration of each and every switchboard with connectivity to the main Distribution Board. n 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. n Demonstration of protective devices with proper current ratings. n Location of MDB/SDBs are significant issue. 10

Assignment 1 n We’ll have to perform the electrical design of a single room which might be used as a store room. 2/26/2021 11

Fittings and Fixture Layout (Example 1) LEGEND A 1 Switchboard (Concealed) Wall Bracket Light at Lintel Level 1 12

Conduit Layout (Example 1) LEGEND L Switchboard (Concealed) C 1 L Why arrow? Wall outlet at Lintel Level 1 C 1=2 x 1. 5 mm 2 13

Switchboard Connection Diagram (Example 1) SB 1 2 x 1. 5 mm 2 A 1 14

Assignment 2 n Let’s add some additional fixtures so that the store of Assignment 1 can be used as living purpose as well. 2/26/2021 15

Fittings and Fixture Layout (Example 2) LEGEND A 1 Switchboard (Concealed) Wall Bracket Light at Lintel Level A 2 1 F 1 2/26/2021 Ceiling Fan 16

Conduit Layout (Example 2) LEGEND L Switchboard (Concealed) C 1 L Wall outlet at Lintel Level F Ceiling Fan outlet F C 3 1 C 1=2 x 1. 5 mm 2 C 3=3 x 2 x 1. 5 mm 2 2/26/2021 17

Switchboard Connection Diagram (Example 2) SB 1 R A 1 A 2 2 x 1. 5 mm 2 F 1 18

Assignment 3 n Let’s modify the above room so that it can be used as a complete bed room. 2/26/2021 19

Fittings and Fixture Layout (Example 3) - - LEGEND TV 1 Switchboard (Concealed) A 1 Wall Bracket Light at Lintel Level TS 1 Fluorescent Wall Light Fitting A 2 1 Ceiling Fan F 1 ST 2 -Pin 5 A Socket at Table Height Level TS 2 -Pin 5 A Socket at Skirting Level for TV TV - - 2 -Pin TV Antenna Socket 20

Conduit Layout (Example 3) - - LEGEND L Switchboard (Concealed) S C 1 L F C 2 C 6 C 2 1 L Wall outlet at Lintel Level F Ceiling Fan outlet S Socket outlet at Skirting Level T Socket outlet at Table Height Level - - T L C 1 2 -Pin TV Antenna Socket C 1=2 x 1. 5 mm 2 C 2=4 x 1. 5 mm 2 C 23=6 x(2 x 1. 5 mm 2) 21

Switchboard Connection Diagram (Example 3) SB 1 R TS 1 ST 1 A 1 A 2 2 x 1. 5 mm 2 F 1 22

Assignment 4 n Now, let’s perform electrical design for the two-room layout shown below. 2/26/2021 23

Fittings and Fixture Layout (Example 4) LEGEND F 2 Switchboard (Concealed) A 3 A 4 Wall Bracket Light at Lintel Level SS 3 2 Fluorescent Wall Light Fitting SS 2 A 1 SS 1 1 A 2 TS 1 Ceiling Fan F 1 TV 1 - - SS 2 -Pin 5 A Socket at Switchboard (SB) Level TS 2 -Pin 5 A Socket at Skirting Level for TV TV - - T 1 2 -Pin TV Antenna Socket 24

Conduit Layout (Example 4) LEGEND C 1 L Switchboard (Concealed) L F C 2 2 S C 1 L Wall outlet at Lintel Level F Ceiling Fan outlet S S C 2 C 4 L Socket outlet at Skirting/SB Level S L C 1=2 x 1. 5 mm 2 F C 23 C 2 S L - - C 1 1 C 2=4 x 1. 5 mm 2 C 4=2 x 2. 5 mm 2 C 23=2 x(6 x 1. 5 mm 2) 25

Switchboard Connection Diagram (Example 4) 2 x 2. 5 mm 2 SB 1 SB 2 R SS 1 SS 2 TS 1 T 1 A 2 F 1 R SS 3 A 4 2 x 1. 5 mm 2 F 2 26

End of Slides on Drawing Lecture-1 27