1. Slides on Drawing Lecture-3
Demonstration on complete drawing
For an average sized apartment.

2. Civil Layout Total Area (30’x60’) 1800 sq. ft. V E R A N BED D 10’x15’
KITCHEN V E R A N D H
BED
10’x15’
8’x20’
DINNING
15’x20’
TOILET
8’x8’
UTILITY
5’x12’
DRAWING
13’x25’
STORE
6’x6’
LIFT
LOBBY
Total Area (30’x60’)
1800 sq. ft.
Civil Layout

3. Fittings & Fixture Layout
SL1
15_1 K3 K2
ST1 T1
15_2 2 F1 3 T2 L1 L2
SS1 M1
- -
TV1
TS1
TE1 M2 F2 T3
- -
TV2
TS2 L3 L4
SS2 4
TE2
SS3 K5 6 5 K4
SL2
ST2
ML1
Fittings & Fixture Layout 14 F6
TE5
SS7 L9
L10 T8
15_3
15_4 1 K1
CB 1 - 15
K11
K12 7 K6
ST3
ML2
ST4 K7
SDB 1
TJB
AJB K8 8
SL3
ST5
ML3 13
K10
CH1
SS6 F5 12 L8 T7
TE4 9 M3 F3
TE3 L5 T5 L6 K9
SS4 T4
- -
TS3
TV3 T6 M4 F4 11
SS5
- -
TV4
TS4 L6 L7 10 K9
SL4
ST6
ML4
MDB

4. Conduit Layout-Layer 1 Internal room/Light load Wiring
- - S C2 C3 C1 S M C1 C3 C2 M
- - L L S K S T F L T F L K C1 T T S S 3 S 4 5 6 S L C1 C2 C1 C2 L K 2
Conduit Layout-Layer 1 Internal room/Light load Wiring T K 1 14 S C1 S S
CB 1 C2 C1 C3 T L K L F T K S
TJB
AJB 8
SDB 1 7 T K K C3 C2 C1 K C1 C1 15 13 - K C1 C3 S 12 S L T C1 C2 9 L T F L S K C3 L S C1 C2 C3 11 L F T L C1 C2 C3 T T F L K 10 K M3
MDB
- -
- - S L M4 S S T

5. Conduit Layout-Layer 2 Heavy load WiringK 2 1 3 M
- - 4 6 5 8 9 M3 10 M4 11 12 13 7 14
CB 1 - 15
SDB 1
TJB
AJB
MDB S T F L C2 C1 C3 C6
C26 C5
C52
Conduit Layout-Layer 2 Heavy load Wiring C5
C52
C26 C6 C6

6. Conduit Layout-Layer 3 SB Grouping & SDB-SB Wiring
- - S C2 C3 C1 S M C1 C3 C2 M
- - L L S
Group 1
SB 1,2 & 3 K S C5
Group 2
SB 4,5 & 6 T F L T F L K C1
Group 3
SB 7,8,9 &10 T T S S
Group 4
SB 11,12,13 &15 3 S 4 5 6 C1 S C5 C4 L C1 C2
C52 C5 C1 C2 L C4 K 2
Group 5
SB 14
Conduit Layout-Layer 3 SB Grouping & SDB-SB Wiring T K 1 14 S C1 C5 S S C4 C5
CB 1 T L K L F T C2 C1
C52 K S C3 C5 C1
C26 C5
TJB
AJB 8
SDB 1
C5,1 C1 7 T K K C3 C2 C1 K C1 C5 C4
C1,1 C1 C1 15 13 C6 C6 - K C1 C1 C3 C4 S 12 S L T 9 L T F L S
C1,2 C2 C1 K C3 C1
C1,1 C1 L S C1 C2 C3 11 L F T C1 L C1 C2 C3 T T F L K 10 C2 K M3
MDB
- -
- - C1 S L M4 S S T

7. Conduit Layout-Layer 4 Cable TV, Telephone & Calling bell Wiring
- -
- - S C2 C3 C1 S M M L C1 C3 C2 L S K S C5 T F L T F L K C1 T T S 3 S S 4 5 6 C1 S C5 C4 L C1 C2
C52 C5 C1 C2 L C4 K 2
Conduit Layout-Layer 4 Cable TV, Telephone & Calling bell Wiring T K 1 14 S C5 C1 S S C4 C5
C4,1
CB 1 T L K L F T C2 C1
C52 K S C3 C5 C1
C26 C5
TJB
AJB 8
SDB 1 C1
C5,1 7 T C1 K K C3 C2 C1 K C4 C1
C1,1 C1 C5 C1 15 13 C6 C6 - K C1 C1 C3 C4 S 12 S L T 9 L T F L S C2
C1,2 C1 K C3 C1
C1,1 C1 L S C1 C2 C3 11 L F T C1 L C1 C2 C3 T T F L K 10 C2 K M3
MDB
- -
- - C1 S L M4 S S T

8. Conduit Layout-Layer 5 MDB-SDB Connection & Wiring for Surge Arrester
1x1”dia Riser
Gr. To Top Fl.
For Lightning Arrester C4 K 2 1 3 M
- - 4 6 5 8 9 M3 10 M4 11 12 13 7 14
CB 1 - 15
SDB 1
TJB
AJB
MDB S T F L C2 C1 C3
C1,2
C1,1
C26 C6 C5
C52
C5,1
C4,1
Conduit Layout-Layer 5 MDB-SDB Connection & Wiring for Surge Arrester
PVC Riser
C26 C6 C6

9. Switch Board Connection Diagram
2x1.5mm2
Group 1
SB 1 K 1
SB 2 2 3 T ST SL
SB 3 L F TS R SS
2x4mm2
ECC 14SWG
TO SDB1
2x2.5mm2 ECC 16SWG
2x1.5mm2
Group 5
SB 14 L 9 10 T 8 F 6 R SS 7
2x2.5mm2
ECC 16SWG
TO SDB1
2x1.5mm2
Group 2
SB 5 K 4
ST2 ML 1 SL 2
SB 6 5 SS 3
2x4mm2
ECC 14SWG
TO SDB1
2x2.5mm2
ECC 16SWG
2x1.5mm2 ECC 16SWG
SB 4 L T F TS R
2x1.5mm2
Group 3
SB 8 K 8
ST5 ML 3 SL
2x4mm2
ECC 14SWG
TO SDB1
SB 10 9
ST6 4
SB 9 L 5 6 T F TS R SS
SB 7 7
ST3
ST4 2
2x1.5mm2 ECC 16SWG
2x2.5mm2
ECC 16SWG SL 1

10. Switch Board Connection Diagram (Contd.)
2x1.5mm2
Group 4
SB 13 K 10
2x4mm2
ECC 14SWG
TO SDB1
SB 12 L 8 CH 1 T 7 F 5 R SS 6
SB 15 12
PB1 11
2x2.5mm2 ECC 16SWG
ECC 16SWG
SB 11 TS 4 SL 1

11. Flat Distribution Board Connection Diagram
Note: All are SP (Single Pole) MCB (Miniature Circuit Breaker) unless specified.
TO MDB
SDB 1
50 A TP )
2” G.I. Pipe containing this cable
4x1C, 25mm2
ECC 6SWG
10 A )
10 A )
15 A )
15 A )
15 A )
15 A )
15 A )
15 A )
15 A )
15 A )
20 A )
20 A )
20 A )
20 A )
2x2.5mm2
ECC 16SWG
2x4mm2
ECC 14SWG
2x6mm2
ECC 14SWG
Spare
Group 5
Group 1
Group 2
Group 3
Group 4
15_1
15_2
15_3
15_4
M_1
M_2
M_3
M_4
LOAD DIVISION
Phase a (75 A)
M_3, 15_1,15_2,
Group 4, Group 5
Phase b (75 A)
M_4, 15_3, Spare
Group 1, Group 2
Phase c (70 A)
M_1, M_2, 15_4,
Group 3

12. Main Distribution Board Connection Diagram
Main Earthing Lead through 4” G.I. Pipe
TO SOURCE
3 phase Check Meter
MDB
300 A TP )
MCCB
4” G.I. Pipe containing this cable
4x1C, 240mm2
ECC 3/0 SWG
50 A TP )
50 A TP )
50 A TP )
50 A TP )
50 A TP )
50 A TP )
50 A TP )
50 A TP )
50 A TP )
50 A TP )
20 A TP )
SDB 1
SDB 2
SDB 3
SDB 4
SDB 5
SDB 6
SDB 7
SDB 8
SDB 9
SDB 10
WATER PUMP
4x1C, 25mm2
ECC 6SWG
4x1C, 6mm2
ECC 14SWG

13. End of Slides on Drawing Lecture-3