SERVICE CONNECTIONS



SERVICE CONNECTIONS :

Sl.No

Hp. Of 3 Ph Motor

Approx Current at 400 V (Amps)

Size of Single core cable to be used area Sq.m

Capacity of 3 PH Mortors to be utilised

Size of fuse carriers for Aesial /cut outs (Amps)

Size of I.C. fuse wire SWG for Aerial cutout

1

3.0

5.0

2.5

10

16

30

2

5.0

8.0

4.0

10

16

30

3

7.5

12.0

6.0

10

32

28

4

10.0

15.0

6.0

30

32

2x30

5

12.5

19.0

10.0

30

32

23

6

15.0

22.0

10.0

30

32

22

7

20.0

29.0

25.0

30

63

20

8

25.0

36.0

25.0

50

63

18

9

30.0

42.0

25.0

50

63

18

10

35.0

50.0

50.0

50

63

2x20

11

40.0

56.0

50.0

100

100

2x20

12

45.0

63.0

50.0

100

100

2x13

13

50.0

71.0

70.0

100

100

16

14

60.0

83.0

70.0

100

100

15

15

70.0

98.0

95.0

100

200

14

Lighting Loads (S PH in watts:)

1

Up to 500 Watts

2.5

2.5 Amp.

16

40 SWG (Two)

2

500 to 750 Watts

2.5

5 Amp.

16

38 SWG (")

3

750 to 1200 Watts

2.5

5 Amp.

16

33 SWG (")

4

1250 to 1750 Watts

2.5

10 Amp.

16

30 SWG (")

5

1750 to 3900 Watts

2.5

20 Amp.

32

26 SWG (")

F.L. CURRENT OF TRANSFORMERS IN AMPS.

K.V.A

440 V

1100 V

433 V

3ph

25

32.8

1.31

33.34

..

50

65.61

2.62

66.67

..

63

8.06

3.32

84.4

..

75

98.41

3.94

100

..

100

131.22

5.25

133.34

..

150

196.82

7.87

200

..

160

209.95

8.4

213.34

..

200

262.43

10.5

266.68

..

250

328.04

13.12

333.35

..

300

393.66

15.75

400.02

..

315

413.34

16.53

420

..

500

663.08

26.24

666.7

S ph

10

21.739

1.574

 

..

15

32.6

2.36

 

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