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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Engineering Info :