This document provides calculations for the electrical design and lighting selection for a two unit residential building. It includes lumen calculations and light selections for each room in both units. It also includes point calculations to determine the wire size for each circuit based on the load and number of outlets. The calculations follow Indian electrical standards and consider the lumens required based on room size and usage to select the appropriate lighting fixtures.

1. Electrical design and Estimating cost.
By
Engr. Turja Deb Mitun
Basic electrical technology
M.Sc.(Disaster & Environmental Engineering)
B.Sc.( Civil Engineering)

2. DrawingRoom
17'-6"x10'-7"
G.Bed
11'-0"x10'-0"
MBedRoom
11'-0"x12'-0"
BedRoom
10'-0"x14'-0"
Toilet1
8'-1"x5'-0"
Veranda1
7'-9"x4'-4"
Veranda2
6'-6"x4'-4"
Toilet2
7'-3"x4'-6"
Kitchen
8'-6"x5'-7"
Veranda3
10'-6"x3-6"
G.Bed
11'-0"x10'-0"
MBedRoom
11'-0"x12'-0"
BedRoom
10'-0"x14'-0"
Veranda2
7'-8"x4'-4"
Veranda1
6'-6"x4'-4"
Toilet2
7'-5"x4'-6"
Kitchen
8'-6"x5'-8"
Com.Toilet
7'-3"x4'-0"
Veranda3
10'-6"x3'-6"
2nd Floor/Typical Floor Plan
Com.Toilet
7'-3"x4'-0"
Dinning
10'-0"x18'-11"
Store
3'-9"x2'-4"
Store
3'-9"x2'-4"
Dinning
10'-0"x18'-11"
DrawingRoom
17'-6"x10'-7"
Toilet1
8'-1"x5'-0"
9'10"x4'
9'10"x4'
16'x7'5"
UnitAUnitB

3. Drawing Room
17'-6" x 10'-7"
G. Bed
11'-0" x 10'-0"
Bed Room
10'-0" x 14'-0"
Toilet 1
8'-1" x 5'-0"
Veranda 1
7'-9" x 4'-4"
Veranda 2
6'-6" x 4'-4"
Kitchen
8'-6" x 5'-7"
Veranda 3
10'-6" x 3-6"
G. Bed
11'-0" x 10'-0"
M Bed Room
11'-0" x 12'-0"
Bed Room
10'-0" x 14'-0"
Veranda 1
6'-6" x 4'-4"
Toilet 2
7'-5" x 4'-6"
Kitchen
8'-6" x 5'-8"
Com.Toilet
7'-3" x 4'-0"
Veranda 3
10'-6" x 3'-6"
Com.Toilet
7'-3" x 4'-0"
Dinning
10'-0" x 18'-11"
Store
3'-9"x2'-4"
Store
3'-9"x2'-4"
Dinning
10'-0" x 18'-11"
Drawing Room
17'-6" x 10'-7"
Toilet 1
8'-1" x 5'-0"
Coridoor
9'10"x 4'
Stair
16'x7'5"
Unit A
Unit B
M Bed Room
11'-0" x 12'-0"
Toilet 2
7'-3" x 4'-6"
Veranda 2
7'-8" x 4'-4"
Coridoor
9'10"x 4'

4. CB
CB
Position of Electrical Installation Points
Earthing
Door Bell Fan
CB Circuit Breaker
Flouresent light
CFL
Switch board
2 Pin Point
3 Pin Point
Exhust fan
Energy meeter
Meter Light
& Meter power
Electrical legend

5. EMMLMPPS1
C1
B1
SB2S1
F1
F2
B2
C2
C3
CB
SB3
SB4
C4
SB5
C5
C6B3C7
S2
C8
F3F4
F5
SB6
F6
C8
C9
S3
SB7
C10
EF1
C11
S4
C12
SB8
F7
F8
S5
C13
PS2
C14
C15
C16
SB9
EF2
B4
C17
SB10
F9
B5S7
C18
C19
SB11
EF3
B6
C20
C21
EMMLMPPS1
C1
B1
SB1
SB2
S1
F1
F2
B2
C2
C3
CB
SB3
SB4
C4
C5
C6C7
S2
C8
F3
F4F5
SB6
F6
C8
C9
S3
SB7
C10EF1
S4
C11
SB8
F7F8
S5
C13
PS2
C14
C15
C16
SB9
EF2
C17
SB10F9
B5S7
C18
C19
SB11
EF3
B6
C20C21
SB1
J2
J1
J2
J1
Representation of Conduit Run
B3
SB5

6. For unit A lumen calculation and light Selection
A) Light for master bed room :
Total required lumen : (11X12X25)/(0.8X0.9)
= 4583.33 lm
Light selection : 40 W Fluorescent lamp (1 pic)
32 W CFL (1 pic)
B) Light for bed room :
Total required lumen : (10X14X25)/(0.8X0.9)
= 4861.11 lm
Light selection : 40 W Fluorescent lamp (1 pic)
32 W CFL (1 pic)
C) Light for Gust bed room :
Total required lumen : (11X10X25)/(0.8X0.9)
= 3819.44 lm
Light selection : 40 W Fluorescent lamp (1 pic)
18W CFL (1 pic)
D) Light for Drawing room :
Total required lumen : (17.5X10.5833X30)/(0.8X0.9)
= 7716.99 lm
Light selection : 40 W Fluorescent lamp (2 pic)
32 W CFL (1 pic)
E) Light for Dining room :
Total required lumen : (10X18.9167X35)/(0.8X0.9)
= 9195.618 lm
Light selection : 40 W Fluorescent lamp (3 pic)
5 W CFL (1 pic)
F) Light for corridor :
Total required lumen : (9.834X4X25)/(0.8X0.9)
= 949.167 lm
Light selection : 18W CFL (1 pic)
G) Light for Kitchen :
Total required lumen : (8.5X5.5834X35)/(0.8X0.9)
= 2307 lm
Light selection : 20 W CFL (1 pic)
H) Light for Store room :
Total required lumen : (3.75X2.33X25)/(0.8X0.9)
= 303.386lm
Light selection : 7 W CFL (1 pic)
I) Light for Toilet 1 :
Total required lumen : (8.083X5X30)/(0.8X0.9)
= 1683.96 lm
Light selection : 26 W CFL (1 pic)
5 W CFL (1 pic)

7. J) Light for toilet 2 :
Total required lumen : (7.25X4.5X30)/(0.8X0.9)
= 1359.375lm
Light selection : 26 W CFL (1 pic)
K) Light for Common toilet :
Total required lumen : (7.25X4X30)/(0.8X0.9)
= 1208.34 lm
Light selection : 23 W CFL (1 pic)
L) Light for Veranda 1 :
Total required lumen : (7.75X4.34X25)/(0.8X0.9)
= 1192.1 lm
Light selection : 18 W CFL (1 pic)
5 W CFL (1 pic)
M) Light for Veranda 2 :
Total required lumen : (6.5X4.34X25)/(0.8X0.9)
= 979.514 lm
Light selection : 18 W CFL (1 pic)
N) Light for Veranda 3 :
Total required lumen : (10.5X3.5X25)/(0.8X0.9)
= 1276 lm
Light selection : 23 W CFL (1 pic)
O) Light for Stair :
Total required lumen : (16X7.417 X25)/(0.8X0.9)
= 4120.56 lm
Light selection : 40 W Fluorescent lamp (1 pic)
20 W CFL (1 pic)
For unit B lumen calculation and light Selection
A) Light for master bed room :
Total required lumen : (11X12X25)/(0.8X0.9)
= 4583.33 lm
Light selection : 40 W Fluorescent lamp (1 pic)
32 W CFL (1 pic)
B) Light for bed room :
Total required lumen : (10X14X25)/(0.8X0.9)
= 4861.11 lm
Light selection : 40 W Fluorescent lamp (1 pic)
32 W CFL (1 pic)
C) Light for Gust bed room :
Total required lumen : (11X10X25)/(0.8X0.9)
= 3819.44 lm
Light selection : 40 W Fluorescent lamp (1 pic)
18W CFL (1 pic)

8. D) Light for Drawing room :
Total required lumen : (17.5X10.5833X30)/(0.8X0.9)
= 7716.99 lm
Light selection : 40 W Fluorescent lamp (2 pic)
32 W CFL (1 pic)
E) Light for Dining room :
Total required lumen : (10X18.9167X35)/(0.8X0.9)
= 9195.618 lm
Light selection : 40 W Fluorescent lamp (3 pic)
5 W CFL (1 pic)
F) Light for corridor :
Total required lumen : (9.834X4X25)/(0.8X0.9)
= 949.167 lm
Light selection : 18W CFL (1 pic)
G) Light for Kitchen :
Total required lumen : (8.5X5.68X35)/(0.8X0.9)
= 2346.945 lm
Light selection : 30 W CFL (1 pic)
11 W CFL (1 pic)
H) Light for Store room :
Total required lumen : (3.75X2.33X25)/(0.8X0.9)
= 303.386lm
Light selection : 7 W CFL (1 pic)
I) Light for Toilet 1 :
Total required lumen : (8.083X5X30)/(0.8X0.9)
= 1683.96 lm
Light selection : 26 W CFL (1 pic)
5 W CFL (1 pic)
J) Light for toilet 2 :
Total required lumen : (7.317X5.67 X30)/(0.8X0.9)
= 1752.267lm
Light selection : 30 W CFL (1 pic)
11 W CFL (1 pic)
K) Light for Common toilet :
Total required lumen : (7.25X4X30)/(0.8X0.9)
= 1208.34 lm
Light selection : 23 W CFL (1 pic)
L) Light for Veranda 1 :
Total required lumen : (7.75X4.34X25)/(0.8X0.9)
= 1192.1 lm
Light selection : 18 W CFL (1 pic)
5 W CFL (1 pic)
M) Light for Veranda 2 :
Total required lumen : (7.67X4.34X25)/(0.8X0.9)
= 1155.82 lm
Light selection : 23 W CFL (1 pic)

9. N) Light for Veranda 3 :
Total required lumen : (10.5X3.5X25)/(0.8X0.9)
= 1276 lm
Light selection : 23 W CFL (1 pic)
O) Light for Stair :
Total required lumen : (16X7.417 X25)/(0.8X0.9)
= 4120.56 lm
Light selection : 40 W Fluorescent lamp (1 pic)
20 W CFL (1 pic)
Point calculation and wire size
Master Bedroom and Veranda 1 (Unit A)
Equipment name Quantity Watts
Light 4 (5+18+32+40)=92
Fan 2 (100+100)=200
No of two pin point 1 100
Total watts 395
Total current : (Total voltage/supply voltage)
= 395 / 230 =1.7A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Bedroom and Veranda 2 (Unit A)
Equipment name Quantity Watts
Light 3 (18+32+40)=90
Fan 1 100
No of two pin point 1 100
Total watts 290
Total current : (Total voltage/supply voltage)
= 290 / 230 =1.26 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Gust Bed room (Unit A)
Equipment name Quantity Watts
Light 2 (18+40)=58
Fan 1 100
No of two pin point 1 100
Total watts 258

10. Total current : (Total voltage/supply voltage)
= 258/ 230 =1.12A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Drawing room and Veranda 3 (Unit A)
Equipment name Quantity Watts
Light 2 (32+23+40)=95
Fan 2 100+100=200
No of two pin point 1 100
Total watts 395
Total current : (Total voltage/supply voltage)
= 395/ 230 =1.7A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Dining room (Unit A)
Equipment name Quantity Watts
Light 4 (40+40+40+5)=125
Fan 3 100+100+100=300
No of two pin point 1 100
Total watts 525
Total current : (Total voltage/supply voltage)
= 525/ 230 =2.28 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Corridor (Unit A)
Equipment name Quantity Watts
Light 1 18
Total watts =18
Total current : (Total voltage/supply voltage)
= 18/ 230 =0.07A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A

11. Kitchen and Store room (Unit A)
Equipment name Quantity Watts
Light 2 (20+7)=27
Fan 1 100
No of two pin point 1 100
Total watts 227
Total current : (Total voltage/supply voltage)
= 227/ 230 =0.98A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Toilet 1 (Unit A)
Equipment name Quantity Watts
Light 2 (26+5)=31
Fan 1 100
Total watts 131
Total current : (Total voltage/supply voltage)
=131/ 230 =0.95 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Toilet 2 (Unit A)
Equipment name Quantity Watts
Light 1 26
Fan 1 100
Total watts 126
Total current : (Total voltage/supply voltage)
=126/ 230 =0.54 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Common Toilet (Unit A)
Equipment name Quantity Watts
Light 1 23
Total watts 23
Total current : (Total voltage/supply voltage) =23/ 230 =0.1 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10

12. Stair (Unit A)
Equipment name Quantity Watts
light 2 (40+20)=60
Total watts 60
Total current : (Total voltage/supply voltage)
=60/ 230 =0.26 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Power point (Unit A)
Equipment name Quantity Watts
3 pin 2 1000+1000=2000
Total watts 2000
Total current : (Total voltage/supply voltage)
=2000/ 230 =8.7A
Size of conductor is selected 1x4.0 mm2
(1/2.24) which able to carry current in conduit 20 A
 For meter to Circuit breaker conductor is selected 1X6.0 mm2
(1/2.80) which is able
to carry in conduit 27A
Point calculation and wire size
Master Bedroom and Veranda 1 (Unit B)
Equipment name Quantity Watts
Light 4 (5+18+32+40)=93
Fan 2 (100+100)=200
No of two pin point 1 100
Total watts 395
Total current : (Total voltage/supply voltage)
= 395 / 230 =1.7A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Bedroom and Veranda 2 (Unit B)
Equipment name Quantity Watts
Light 3 (23+32+40)=95
Fan 1 100
No of two pin point 1 100
Total watts 295

13. Total current : (Total voltage/supply voltage) = 295/ 230 =1.28 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Gust Bed room (Unit B)
Equipment name Quantity Watts
Light 2 (18+40)=58
Fan 1 100
No of two pin point 1 100
Total watts 258
Total current : (Total voltage/supply voltage)
= 258/ 230 =1.12A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Drawing room and Veranda 3 (Unit B)
Equipment name Quantity Watts
Light 2 (32+23+40)=95
Fan 2 100+100=200
No of two pin point 1 100
Total watts 395
Total current : (Total voltage/supply voltage)
= 395/ 230 =1.7A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Dining room (Unit B)
Equipment name Quantity Watts
Light 4 (40+40+40+5)=125
Fan 3 100+100+100=300
No of two pin point 1 100
Total watts 525
Total current : (Total voltage/supply voltage)
= 525/ 230 =2.28 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Corridor (Unit B)
Equipment name Quantity Watts
Light 1 18

14. Total watts =18
Total current : (Total voltage/supply voltage)
= 18/ 230 =0.07A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Kitchen and Store room (Unit B)
Equipment name Quantity Watts
Light 3 (30+11+7)=48
Fan 1 100
No of two pin point 1 100
Total watts 148
Total current : (Total voltage/supply voltage)
= 148/ 230 =0.64A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Toilet 1 (Unit B)
Equipment name Quantity Watts
Light 2 (26+5)=31
Fan 1 100
Total watts 131
Total current : (Total voltage/supply voltage)
=131/ 230 =0.95 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Toilet 2 (Unit B)
Equipment name Quantity Watts
Light 2 (30+11)=41
Fan 1 100
Total watts 141
Total current : (Total voltage/supply voltage)
=141/ 230 =0.61 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Common Toilet (Unit B)

15. Equipment name Quantity Watts
Light 1 23
Total watts 23
Total current : (Total voltage/supply voltage)
=23/ 230 =0.1 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Stair (Unit B)
Equipment name Quantity Watts
light 2 (40+20)=60
Total watts 60
Total current : (Total voltage/supply voltage)
=60/ 230 =0.26 A
Size of conductor is selected 1x1.5 mm2
(1/1.40) which able to carry current in conduit 10 A
Power point (Unit B)
Equipment name Quantity Watts
3 pin 2 1000+1000=2000
Total watts 2000
Total current : (Total voltage/supply voltage)
=2000/ 230 =8.7A
Size of conductor is selected 1x4.0 mm2
(1/2.24) which able to carry current in conduit 20 A
 For meter to Circuit breaker conductor is selected 1X6.0 mm2
(1/2.80) which is able to
carry in conduit 27A

16. Length of pvc conduit for A unit
 Vertical run from meter (M) to earthing point (E) = 5 feet.
 Horizontal run between meter(M) , Main switch light (ML) and Main switch power
(MP)= 3.5 feet.
 Horizontal run from Main switch power to Circuit breaker (CB)= 9.32 feet.
 Vertical run from (MP) to 1st
floor horizontal conduit path = 5+10=15 feet.
 Vertical run from horizontal conduit path to (CB) = 10-5.5=4.5 feet.
Sub total = 37.32 feet
For Stair :
 From (CB) to switch board 1 (through ceiling) =2.67 feet.
 Horizontal conduit path to Switch board 1 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB1 to B1 = 1.42 feet.
 SB1 to C1 = 1.75 feet.
From ceiling to point (vertical run) :
 To B1 = 1.5+0.25 = 1.75 feet.
 To C2 = 1.5+0.25 = 1.75 feet.
Total conduit length for stair = 14.84 feet.
For Drawing room and veranda 3 :
 From (CB) to switch board 2 (through ceiling) = 6.42 feet.
 Horizontal conduit path to Switch board 2 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB2 to S1 = 4.75 feet.
 S1 to F1 = 3.58 feet.
 F1 to C21 = 4.16 feet.
 F1 to F2 = 7.33 feet.
 F2 to C2 = 7.83 feet.
 F2 to C3 = 5 feet.
 F2 to B2 = 4.75 feet.
From ceiling to point (vertical run) :
 To S1 = 10-1.5 = 8.5 feet.
 To F1 = 0.25 feet.
 To F2= 0.25 feet.

17.  To C21 = 1.5+0.25= 1.75 feet.
 To C2 = 1.5+0.25= 1.75 feet.
 To C3 = 1.5+0.25= 1.75 feet.
 To B2 = 1.5+0.25= 1.75 feet.
Total conduit length for Drawing room and veranda3 = 64.29 feet.
For Dining room:
 From (CB) to switch board 3 (through ceiling) = 2.16 feet.
 Horizontal conduit path to Switch board 3 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB3 to F3 = 2.83 feet.
 F3 to F4 = 6.5 feet.
 F4 to C8 = 5 feet.
 F4 to B3 = 3.83 feet.
 B3 to C6 = 6 feet.
 B3 to C7 = 5.5 feet.
 F4 to F5 = 4.5 feet.
 F5 to S2 = 3 feet.
From ceiling to point (vertical run) :
 To F3 = 0.25 feet.
 To F4 = 0.25 feet.
 To C8= 1.75 feet.
 To B3 = 1.5+0.25= 1.75 feet.
 To C6 = 1.5+0.25= 1.75 feet.
 To C7 = 1.5+0.25= 1.75 feet.
 To F5 = 0.25 feet.
 To S2 = 8.5 feet.
Total conduit length for Dining room = 61.75 feet.
For Corridor :
 From (CB) to junction point 1 (through ceiling) =12.16 feet.
 From (J1) to switch board 4 (through ceiling) = 9 feet
 Horizontal conduit path to Switch board 4 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB4 to C4 = 2 feet.

18. From ceiling to point (vertical run) :
 To C4 = 1.5+0.25 = 1.75 feet.
Total conduit length for Corridor = 30.41 feet.
For Common toilet :
 From (J1) to switch board 5 (through ceiling) = 10.67 feet
 Horizontal conduit path to Switch board 5 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB5 to C5 = 4.67 feet.
From ceiling to point (vertical run) :
 To C5 = 1.5+0.25 = 1.75 feet.
Total conduit length for Common toilet = 22.59 feet.
For Gust bed room:
 From (J1) to switch board 6 (through ceiling) = 3 feet.
 Horizontal conduit path to Switch board 6 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB6 to F6 = 4.58feet.
 F6 to C9 = 5.33 feet.
 F6 to S3 = 5 feet.
 S3 to C8 = 2.83 feet.
From ceiling to point (vertical run) :
 To F6 = 0.25 feet.
 To C9= 1.75 feet.
 To C8 = 1.5+0.25= 1.75 feet.
 To S3 = 8.5 feet.
Total conduit length for Gust bed room = 38.49feet.
For Kitchen and store room :

19.  From junction 1 to junction 2 (through ceiling) = 8.68 feet
 From junction 1 to switch board 7 (through ceiling) = 2.16 feet.
 Horizontal conduit path to Switch board 7 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB7 to C10 = 4.25 feet.
 C10 to S4 = 4.83 feet.
 S4 to C11 = 1.34 feet.
 S4 to C12 = 7 feet.
 C11 to EF1 = 2.76 feet.
From ceiling to point (vertical run) :
 To C10 = 1.5+0.25= 1.75 feet.
 To S4 = 8.5 feet.
 To C11 = 1.5+0.25= 1.75 feet.
 To C12 = 1.5+0.25= 1.75 feet.
 To EF1 = 1.5+0.25=1.75 feet.
Total conduit length for Kitchen and Store room = 45.65 feet.
For M. Bed room and veranda 2 :
 From Junction point 2 to switch board 8 (through ceiling) = 3 feet.
 Horizontal conduit path to Switch board 8 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB8 to F7 = 4.16 feet.
 F7 to C14 = 5 feet.
 F7 to F8 = 5.67 feet.
 F8 to C13 = 4.5 feet.
 C13 to S5 = 4 feet.
 F8 to C16 = 7 feet.
 C16 to C15 = 4 feet.
From ceiling to point (vertical run) :
 To F7 = 0.25 feet.
 To F8 = 0.25 feet.
 To C13= 1.5+0.25= 1.75 feet.
 To C14 = 1.5+0.25= 1.75 feet.
 To C 15= 1.5+0.25= 1.75 feet.
 To C 16= 1.5+0.25= 1.75 feet.
 To S5 = 8.5 feet.

20. Total conduit length for M. Bed room and Veranda 2 = 57.85 feet.
For toilet 2 :
 From (J2) to switch board 9 (through ceiling) = 6 feet
 Horizontal conduit path to Switch board 9 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB9 to C17 = 3.58 feet.
 C17 to B4 =1.5 feet.
 B4 to EF2 = 2 feet.
From ceiling to point (vertical run) :
 To C17 = 1.5+0.25 = 1.75 feet.
 To B4 = 1.5+0.25 = 1.75 feet.
 To EF2 = 1.5+0.25 = 1.75 feet.
Total conduit length for toilet 2 = 23 feet.
For Bed room and veranda 1 :
 From Junction point 2 to switch board 10 (through ceiling) = 8.5 feet.
 Horizontal conduit path to Switch board 10 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB10 to F9 = 7.58 feet.
 F9 to C18 = 5 feet.
 F9 to C19 = 10 feet.
 F9 to B5 = 4 feet.
 B5 to S7 = 5 feet.
From ceiling to point (vertical run) :
 To F9 = 0.25 feet.
 To C18= 1.5+0.25= 1.75 feet.
 To C19 = 1.5+0.25= 1.75 feet.
 To B 5= 1.5+0.25= 1.75 feet.
 To S7 = 8.5 feet.
Total conduit length for Bed room and Veranda 1 = 59.85 feet.

21. For toilet 1 :
 From (J2) to switch board 11 (through ceiling) = 17 feet
 Horizontal conduit path to Switch board 11 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB11 to C20 = 4 feet.
 C17 to B6 = 5 feet.
 B6 to EF3 = 2 feet.
From ceiling to point (vertical run) :
 To C20 = 1.5+0.25 = 1.75 feet.
 To B6 = 1.5+0.25 = 1.75 feet.
 To EF3 = 1.5+0.25 = 1.75 feet.
Total conduit length for toilet 1 = 38.75 feet.
Conduit length for power point :
 Circuit breaker to PS1 (through ceiling) = 9 feet.
 Circuit breaker to PS2 (through ceiling) = 37.5 feet.
From ceiling to point :
 PS1 = 8.5+0.25 = 8.75 feet
 PS2 = 8.5+0.25 = 8.75 feet
Total conduit length for power point = 64 feet.
 Total conduit length required for A unit = 558.01 feet.
Wastage and length of wire used in switch boards and outlets e.t.c = 20% of total
conduit = 558.01 X 0.2
= 111.602 feet
So, Total conduit for A unit = 558.01+111.602
= 669.612 feet
Length of pvc conduit for B unit
Conduit length for earthing point to CB same as A unit = 37.32 feet.
For Stair :
Same as A unit = 14.84 feet.

22. For Drawing room and veranda 3 :
Same as A unit = 64.29 feet.
For Dining room:
Same as A unit = 61.51 feet.
For Corridor :
Same as A unit = 30.41 feet.
For Common toilet :
Same as A unit = 22.59 feet.
For Gust bed room:
Same as A unit = 38.49 feet.
For Kitchen and store room :
 From junction 1 to junction 2 (through ceiling) = 8.68 feet
 From junction 1 to switch board 7 (through ceiling) = 2.16 feet.
 Horizontal conduit path to Switch board 7 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB7 to C10 = 4.25 feet.
 SB7 to S4 = 4.75 feet.
 S4 to C11 = 2.25 feet.
 S4 to EF1 = 6.34 feet.
 EF1 to C10 = 4.75 feet.
From ceiling to point (vertical run) :
 To C10 = 1.5+0.25= 1.75 feet.
 To S4 = 8.5 feet.
 To C11 = 1.5+0.25= 1.75 feet.
 To EF1 = 1.5+0.25=1.75 feet.
Total conduit length for Kitchen and Store room = 48.43 feet.
For M. Bed room and veranda 2 :
Same as A unit = 57.58 feet.
For toilet 2 :

23.  From (J2) to switch board 9 (through ceiling) = 6 feet
 Horizontal conduit path to Switch board 9 (vertical run) = 10-4.5 =5.5 feet.
Through ceiling (horizontal run) :
 SB9 to C17 = 3.58 feet.
 C17 to EF2 = 3 feet.
From ceiling to point (vertical run) :
 To C17 = 1.5+0.25 = 1.75 feet.
 To EF2 = 1.5+0.25 = 1.75 feet.
Total conduit length for toilet 2 = 21.58 feet.
For Bed room and veranda 1 :
Same as A unit = 59.58 feet.
For toilet 1 :
Same as A unit = 38.75 feet.
Conduit length for power point :
Same as A unit = 64 feet.
 Total conduit length required for B unit = 559.37 feet.
Wastage and length of wire used in switch boards and outlets e.t.c = 20% of total
conduit = 559.37 X 0.2
= 111.874 feet
So, Total conduit for B unit = 559.37+111.874
= 671.244 feet
Total conduit for floor (A unit + B unit)
= (669.621+671.244) feet
= 1340.756 feet
= 1341 feet.

24. Wire length calculation
Negative wire :
Negative wire approximately same as conduit = 1341 feet.
But for power circuit the size is different so that normal negative wire (1X1.5)
= 1341-128 = 1213 feet.
Positive wire calculation for A unit
 From energy meter to ML = 1.34 feet.
 From energy meter to MP = 1.25+1.34 =2.59 feet.
 From ML to CB = 5+4.5+1.25+0.5+9 = 20.25 feet.
 From mp to CB = 5+4.5+0.5+9 = 19 feet.
Sub total = 43.18 feet.
For stair:
 From CB to SB1 = 4.5+2.67+5.5 = 12.67 feet.
 From SB1 to B1 = 5.5+1.6+1.75 = 8.85 feet.
 From SB1 to C1 = 5.5+1.75+1.75 = 9 feet.
Total positive wire required for stair = 30.52 feet.
For Drawing room and veranda 3 :
 From CB to SB2 = 4.5+6.5+5.5 = 16.5 feet.
 From SB2 to S1 = 5.5+4.75+8.5 = 18.75 feet.
 From SB2 to F1 = 5.5+4.75+3.58+0.25 = 14.08 feet.
 From SB2 to F2 = 5.5+4.75+3.58+7.34+0.25 = 21.42 feet.
 From SB2 to B2 = 5.5+4.75+3.58+7.34+4.75+1.75 = 27.67 feet.
 From SB2 to C3 = 5.5+4.75+3.58+7.34+5+1.75 = 27.92 feet.
 From SB2 to C2 = 5.5+4.75+3.58+7.34+7.83+1.75 = 30.75 feet.
 From SB2 to C21 = 5.5+4.75+3.58+4.16+1.75 = 19.74 feet.
Total positive wire required for Drawing room and veranda 3 = 176.83 feet.
For Dining room :
 From CB to SB3 = 4.5+2.16+5.5 = 12.16 feet.
 From SB3 to F3 = 5.5+2.83+0.25 = 6.83 feet.
 From SB3 to F4 = 5.5+2.83+6.5+0.25 = 15.33 feet.
 From SB3 to F5 = 5.5+2.83+6.5+4.5+0.25 = 19.58 feet.
 From SB3 to C8 = 5.5+2.83+6.5+4.92+1.75 = 21.5 feet.
 From SB3 to S2 = 5.5+2.83+6.5+4.5+2.92+8.5 = 30.75 feet.
 From SB3 to B3 = 5.5+2.83+6.5+3.83+1.75 = 20.41 feet.
 From SB3 to C6 = 5.5+2.83+6.5+3.83+5.92+1.75 = 26.33 feet.
 From SB3 to C7 = 5.5+2.83+6.5+3.83+5.5+1.75 = 25.91 feet.

25. Total positive wire required for Dining room = 178.8 feet.
For Corridor :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to SB4 = 5.5+8.92 = 14.42 feet.
 From SB4 to C4 = 5.5+1.92+1.75 = 9.17 feet.
Total positive wire required for Corridor = 39.59 feet.
For Common toilet :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to SB5 = 5.5+10.67 = 16.17 feet.
 From SB5 to C5 = 5.5+4.67+1.75 = 11.92 feet.
Total positive wire required for Common toilet = 44.09 feet.
For G. Bed room :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to SB6 = 5.5+4.25 = 9.75 feet.
 From SB6 to F6 = 5.5+4.85+0.25 = 10.33 feet.
 From SB6 to C9 = 5.5+4.85+5.34+1.75 = 17.17 feet.
 From SB6 to C8 = 5.5+4.85+5+8.5 = 23.58 feet.
 From SB6 to S3 = 5.5+4.85+5+2.83+1.75 = 19.66 feet.
Total positive wire required for G. Bed room = 96.5 feet.
For Kitchen and store room :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to J2 = 8.67 feet.
 From J2 to SB7 = 5.5+2.16 = 7.66 feet.
 From SB7 to C10= 4.25+5.5+1.75 = 11.5 feet
 From SB7 to C12 = 5.5+4.25+4.83+6.92+1.75 = 23. 25 feet.
 From SB7 to S4 = 5.5+4.25+4.83+8.5 = 23.08 feet.
 From SB7 to C11 = 5.5+4.25+4.83+1.34+1.75 = 17.67 feet.
 From SB7 to EF1 = 5.5+4.25+4.83+1.34+2.92+1.75 = 20.59 feet.
Total positive wire required for Kitchen and store room = 128.42 feet.
For M. Bed room and veranda 3 :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to J2 = 8.67 feet.
 From J2 to SB8 = 5.5+3 = 8.5 feet.
 From SB8 to F7= 5.5+4.16+0.25 = 9.91 feet.

26.  From SB8 to C14 = 5.5+6.16+5+1.75 = 18.41 feet.
 From SB8 to F8 = 5.5+6.16+5.67+0.25 = 17.58 feet.
 From SB8 to C13 = 5.5+6.16+5.67+4.5+1.75 = 17.58 feet.
 From SB8 to S5 = 5.5+6.16+5.67+4.5+4+8.5 = 34.33 feet.
 From SB8 to C16 = 5.5+6.16+5.67+7+1.75 = 26.08 feet.
 From SB8 to C15 = 5.5+6.16+5.67+7+3.75+1.75 = 29.83 feet.
Total positive wire required For M. Bed room and veranda 3 = 193.39 feet.
For toilet 2 :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to J2 = 8.67 feet.
 From J2 to SB9 = 5.5+6 = 11.5 feet.
 From SB9 to C17= 5.5+3.58+1.75 = 10.83 feet.
 From SB9 to B4 = 5.5+3.58+1.5+1.75 = 12.33 feet.
 From SB9 to EF2 = 5.5+3.58+1.5+2+1.75 = 14.33 feet.
Total positive wire required For Toilet 2 = 73.66 feet.
For Bed room and Veranda 1 :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to J2 = 8.67 feet.
 From J2 to SB10 = 5.5+5.8 = 14 feet.
 From SB10 to F9= 5.5+7.58+0.25 = 13.33 feet.
 From SB10 to B5 = 5.5+7.58+3.83+1.75 = 18.66 feet.
 From SB10 to S7 = 5.5+7.58+3.83+4.75+8.5 = 30.16 feet.
 From SB10 to C18 = 5.5+7.58+4.75+1.75 = 19.58 feet.
 From SB10 to C19 = 5.5+7.58+9.75+1.75 = 24.58 feet.
Total positive wire required For Bed room and Veranda 1 = 144.98 feet.
For toilet 1 :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to J2 = 8.67 feet.
 From J2 to SB11 = 5.5+16.75 = 22.25 feet.
 From SB11 to B6= 5.5+4+1.75 = 11.25 feet.
 From SB11 to C20 = 5.5+4+4.16+1.75 = 15.41 feet.
 From SB11 to EF3 = 5.5+4+2+1.75 = 13 feet.
Total positive wire required For Toilet 1 = 86.58 feet.
For power circuit :
 From CB to PS1 = 5.5+8.92+8.5 = 22.92 feet.
 From CB to PS2 = 5.5+37.34+8.5= 51.34 feet.
Total = 74.26 feet.

27. Total positive wire required for A unit = 1335.05 feet
= 1335.05+20% wastage
= 1602.06 feet.
Normal (1X1.5) wire required for all purpose without power circuit and meter to circuit
breaker = (1602.06-89.112-51.816)feet
= 1461.132 =1462 feet.

28. (1X4.0) wire for power circuit = 89.112 feet
=90 feet
(1X6.0) wire for meter to circuit breaker = 51.816 feet =52 feet.
Positive wire calculation for B unit :
 From energy meter to ML = 1.34 feet.
 From energy meter to MP = 1.25+1.34 =2.59 feet.
 From ML to CB = 5+4.5+1.25+0.5+9 = 20.25 feet.
 From mp to CB = 5+4.5+0.5+9 = 19 feet.
Sub total = 43.18 feet.
For stair:Same as A unit.
For Drawing room and veranda 3 :Same as A unit.
For Dining room :Same as A unit.
For Corridor :Same as A unit.
For common toilet :Same as A unit.
For G. Bed room :Same as A unit.
For Kitchen and store room :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to J2 = 8.67 feet.
 From J2 to SB7 = 5.5+2.16 = 7.66 feet.
 From SB7 to C10= 5.5+4.75+6.34+4.75+1.75 = 23.09 feet
 From SB7 to S4 = 5.5+4.75+8.5 = 18.75 feet.
 From SB7 to C11 = 5.5+4.75+2.25+1.75 = 14.25 feet.
 From SB7 to EF1 = 5.5+4.75+6.34+4.75+1.75 = 18.34 feet.
Total positive wire required for Kitchen and store room = 106.76 feet.
For M. Bed room and veranda 3 :Same as A unit.
For toilet 2 :
 From CB to J1 = 4.5+12 = 16.5 feet.
 From J1 to J2 = 8.67 feet.
 From J2 to SB9 = 5.5+6 = 11.5 feet.
 From SB9 to C17= 5.5+3.58+1.75 = 10.83 feet.
 From SB9 to EF2 = 5.5+3.58+3+1.75 = 13.83 feet.
Total positive wire required For Toilet 2 = 60.83 feet.

29. For Bed room and Veranda 1: Same as A unit.
For toilet 1: Same as A unit.
For power circuit: Same as A unit.
Total positive wire required for B unit = 1300.56 feet
= 1300.56 +20% wastage
= 1560.672 feet.
= 1561 feet
Normal (1X1.5) wire required for all purpose without power circuit and meter to Circuit
breaker = (1560.672-89.112-51.816)feet
= 1419.744=1420 feet.
(1X4.0) wire for power circuit = 89.112 feet
=90 feet
(1X6.0) wire for meter to circuit breaker = 51.816 feet =52 feet.
For floor (A unit + B unit) :
(1X1.5) wire = 1462+1420 = 2882 feet.
(1X4.0) wire = 89.112 X 2 = 178.274 feet =179 feet.
Neutral wire for power Circuit = 179 feet.
(1X6.0) wire = 51.816 X 2 = 103.632 feet = 104 feet.
Total:
(1X1.5) = 2882 feet.
(1X6.0) = 104 feet.
(1X4.0) = 179+179+179 =537 feet.

30. Summery table:
SI NO Shedule of
material
with
specification
Unit Quantity Rate
taka
Per Total
cost
Remark
01. Conduit Feet 1314 5.33 Feet 7004 Pvc
conduit
02. Wire 1x1.5
(1/1.40)
Feet 2882 5 Feet 14410 Supersine
cable
03. Wire 1x6.0
(1/2.80)
Feet 104 25 Feet 2600 Supersine
cable
04. Wire 1x4.0
(1/2.24)
Feet 537 17 Feet 9129 Supersine
cable
05. Switch
board
------ 22 110 Each 2420 Energy
pek
06. 2 pin ------ 10 140 Each 1400 Energy
pek
07. 3 pin ------ 4 150 Each 600 Energy
pek
08. Earthing rod ------ 2 300 Each 600 --------
09. Junction
box
------ 4 700 Each 2800 --------
10. Main switch
light
------ 2 370 Each 740 Prodip
main
switch
11, Main switch
power
------ 2 670 Each 1340 Energy
pek
12. Circuit
breaker
------ 8 300 Each 2400 Energy
pek
13. Labour cost ------ -------- -------- ------- 25000 ------
14. Design ------ ------ ------ ------ 40000 ------
15. Others ------ ------ ------ ------ 30000 ------
------ ------ ------ ------ ------ Total 126033 ------
Cost
Cost

31. Light calculation :
Standard luninous flux (efficiency)
 Incandescen lamp – 12.9 lm/w
 Flourescent lamp -75 lm/w
 CFL :
5w,7w – 46 lm/w
11w -52 lm/w
18w,20w,23w – 57 lm/w
26w,30w,32w – 60 lm/w
 Recommended value of illumination :
Living room -25 lm/ft2
Bath room – 30 lm/ft2
Dining room- 30 lm/ft2
Kitchen room- 30 lm/ft2
Stair- 30 lm/ft2
Drawing room - 30 lm/ft2
 Factor :
Maintenance factor = 0.8
Utilization factor = 0.9
 Formula :
Total required lumen
=Area(ft2
)x illumination (lm/ft2
)/Uitilization factor x maintenance factor
Standard Assumption :
 Height of roof = 10 feet.
 Height of light above ground = 8.5 feet.
 Height of switch from ground = 4.5 feet.
 Height of service meter from ground = 5 feet.
 Height of power switch (3 pin) from ground = 1.5 feet.
 Height of circuit breaker from ground = 5.5 feet.
 Thickness of casting = 0.5 feet.