Calculator
Full Load Current
Line
1AMP
Phase
0.6AMP
Direct Online Starter
Over Load
Relay Range
1.5 - 3AMP
Backup Fuse
(max.)
4AMP
Recommended Cable Size
2.5Sq. MM Al 1.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
----
Backup Fuse
(max.)
----
Recommended Cable Size
Supply Side
---- --
--
Recommended Cable Size
Motor Side
---- --
--
Full Load Current
Line
1.3AMP
Phase
0.76AMP
Direct Online Starter
Over Load
Relay Range
1.5 - 3AMP
Backup Fuse
(max.)
4AMP
Recommended Cable Size
2.5Sq. MM Al 1.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
----
Backup Fuse
(max.)
----
Recommended Cable Size
Supply Side
---- --
--
Recommended Cable Size
Motor Side
---- --
--
Full Load Current
Line
1.9AMP
Phase
1.12AMP
Direct Online Starter
Over Load
Relay Range
1.5 - 3AMP
Backup Fuse
(max.)
6AMP
Recommended Cable Size
2.5Sq. MM Al 1.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
----
Backup Fuse
(max.)
----
Recommended Cable Size
Supply Side
---- --
--
Recommended Cable Size
Motor Side
---- --
--
Full Load Current
Line
2.6AMP
Phase
1.53AMP
Direct Online Starter
Over Load
Relay Range
2 - 4AMP
Backup Fuse
(max.)
6AMP
Recommended Cable Size
2.5Sq. MM Al 1.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
----
Backup Fuse
(max.)
----
Recommended Cable Size
Supply Side
---- --
--
Recommended Cable Size
Motor Side
---- --
--
Full Load Current
Line
3.7AMP
Phase
2.2AMP
Direct Online Starter
Over Load
Relay Range
3.6AMP
Backup Fuse
(max.)
10AMP
Recommended Cable Size
2.5Sq. MM Al 1.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
----
Backup Fuse
(max.)
----
Recommended Cable Size
Supply Side
---- --
--
Recommended Cable Size
Motor Side
---- --
--
Full Load Current
Line
4.8AMP
Phase
2.8AMP
Direct Online Starter
Over Load
Relay Range
4 - 8AMP
Backup Fuse
(max.)
10AMP
Recommended Cable Size
2.5Sq. MM Al 1.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
2 - 3AMP
Backup Fuse
(max.)
6AMP
Recommended Cable Size
Supply Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Recommended Cable Size
Motor Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Full Load Current
Line
7.8AMP
Phase
4.5AMP
Direct Online Starter
Over Load
Relay Range
6 - 12AMP
Backup Fuse
(max.)
20AMP
Recommended Cable Size
2.5Sq. MM Al 1.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
4 - 6AMP
Backup Fuse
(max.)
10AMP
Recommended Cable Size
Supply Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Recommended Cable Size
Motor Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Full Load Current
Line
11.2AMP
Phase
6.5AMP
Direct Online Starter
Over Load
Relay Range
6 - 12AMP
Backup Fuse
(max.)
20AMP
Recommended Cable Size
2.5Sq. MM Al 1.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
5.5 - 8AMP
Backup Fuse
(max.)
16AMP
Recommended Cable Size
Supply Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Recommended Cable Size
Motor Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Full Load Current
Line
16AMP
Phase
9.2AMP
Direct Online Starter
Over Load
Relay Range
10 - 16AMP
Backup Fuse
(max.)
25AMP
Recommended Cable Size
2.5Sq. MM Al 2.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
8 - 12AMP
Backup Fuse
(max.)
20AMP
Recommended Cable Size
Supply Side
2.5Sq. MM Al 2.5
Sq. MM Cu
Recommended Cable Size
Motor Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Full Load Current
Line
19AMP
Phase
11AMP
Direct Online Starter
Over Load
Relay Range
14 - 20AMP
Backup Fuse
(max.)
32AMP
Recommended Cable Size
4Sq. MM Al 2.5
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
8 - 12AMP
Backup Fuse
(max.)
25AMP
Recommended Cable Size
Supply Side
4Sq. MM Al 2.5
Sq. MM Cu
Recommended Cable Size
Motor Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Full Load Current
Line
22AMP
Phase
12.7AMP
Direct Online Starter
Over Load
Relay Range
18 - 24AMP
Backup Fuse
(max.)
50AMP
Recommended Cable Size
6Sq. MM Al 4
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
10 - 16AMP
Backup Fuse
(max.)
25AMP
Recommended Cable Size
Supply Side
6Sq. MM Al 4
Sq. MM Cu
Recommended Cable Size
Motor Side
2.5Sq. MM Al 1.5
Sq. MM Cu
Full Load Current
Line
29AMP
Phase
16.8AMP
Direct Online Starter
Over Load
Relay Range
22 - 32AMP
Backup Fuse
(max.)
50AMP
Recommended Cable Size
10Sq. MM Al 6
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
14 - 20AMP
Backup Fuse
(max.)
32AMP
Recommended Cable Size
Supply Side
10Sq. MM Al 6
Sq. MM Cu
Recommended Cable Size
Motor Side
4Sq. MM Al 2.5
Sq. MM Cu
Full Load Current
Line
34AMP
Phase
19.7AMP
Direct Online Starter
Over Load
Relay Range
25 - 40AMP
Backup Fuse
(max.)
63AMP
Recommended Cable Size
16Sq. MM Al 10
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
18 - 24AMP
Backup Fuse
(max.)
50AMP
Recommended Cable Size
Supply Side
16Sq. MM Al 10
Sq. MM Cu
Recommended Cable Size
Motor Side
6Sq. MM Al 4
Sq. MM Cu
Full Load Current
Line
41AMP
Phase
23.7AMP
Direct Online Starter
Over Load
Relay Range
30 - 45AMP
Backup Fuse
(max.)
80AMP
Recommended Cable Size
16Sq. MM Al 16
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
17 - 25AMP
Backup Fuse
(max.)
50AMP
Recommended Cable Size
Supply Side
16Sq. MM Al 16
Sq. MM Cu
Recommended Cable Size
Motor Side
6Sq. MM Al 6
Sq. MM Cu
Full Load Current
Line
47AMP
Phase
26.9AMP
Direct Online Starter
Over Load
Relay Range
38 - 63AMP
Backup Fuse
(max.)
80AMP
Recommended Cable Size
25Sq. MM Al 16
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
22 - 32AMP
Backup Fuse
(max.)
63AMP
Recommended Cable Size
Supply Side
25Sq. MM Al 16
Sq. MM Cu
Recommended Cable Size
Motor Side
10Sq. MM Al 6
Sq. MM Cu
Full Load Current
Line
54AMP
Phase
31.2AMP
Direct Online Starter
Over Load
Relay Range
38 - 63AMP
Backup Fuse
(max.)
100AMP
Recommended Cable Size
25Sq. MM Al 16
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
22 - 32AMP
Backup Fuse
(max.)
63AMP
Recommended Cable Size
Supply Side
25Sq. MM Al 16
Sq. MM Cu
Recommended Cable Size
Motor Side
10Sq. MM Al 6
Sq. MM Cu
Full Load Current
Line
67AMP
Phase
38.7AMP
Direct Online Starter
Over Load
Relay Range
50 - 90AMP
Backup Fuse
(max.)
100AMP
Recommended Cable Size
35Sq. MM Al 25
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
25 - 40AMP
Backup Fuse
(max.)
80AMP
Recommended Cable Size
Supply Side
35Sq. MM Al 25
Sq. MM Cu
Recommended Cable Size
Motor Side
16Sq. MM Al 10
Sq. MM Cu
Full Load Current
Line
80AMP
Phase
46.4AMP
Direct Online Starter
Over Load
Relay Range
50 - 90AMP
Backup Fuse
(max.)
125AMP
Recommended Cable Size
50Sq. MM Al 35
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
38 - 63AMP
Backup Fuse
(max.)
100AMP
Recommended Cable Size
Supply Side
50Sq. MM Al
Size - Supply Side
35Sq. MM Cu
Recommended Cable Size
Motor Side
25Sq. MM Al
16
Sq. MM Cu
Sq. MM Cu
Full Load Current
Line
97AMP
Phase
56AMP
Direct Online Starter
Over Load
Relay Range
40 - 110AMP
Backup Fuse
(max.)
160AMP
Recommended Cable Size
70Sq. MM Al 50
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
38 - 63AMP
Backup Fuse
(max.)
100AMP
Recommended Cable Size
Supply Side
70Sq. MM Al 50
Sq. MM Cu
Recommended Cable Size
Motor Side
35Sq. MM Al 25
Sq. MM Cu
Full Load Current
Line
131AMP
Phase
75.6AMP
Direct Online Starter
Over Load
Relay Range
90 - 135AMP
Backup Fuse
(max.)
200AMP
Recommended Cable Size
95Sq. MM Al 70
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
50 - 90AMP
Backup Fuse
(max.)
160AMP
Recommended Cable Size
Supply Side
95Sq. MM Al 70
Sq. MM Cu
Recommended Cable Size
Motor Side
50Sq. MM Al 35
Sq. MM Cu
Full Load Current
Line
157AMP
Phase
90.6AMP
Direct Online Starter
Over Load
Relay Range
140 - 170AMP
Backup Fuse
(max.)
250AMP
Recommended Cable Size
150Sq. MM Al 95
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
70 - 100AMP
Backup Fuse
(max.)
160AMP
Recommended Cable Size
Supply Side
150Sq. MM Al 95
Sq. MM Cu
Recommended Cable Size
Motor Side
70Sq. MM Al 50
Sq. MM Cu
Full Load Current
Line
191AMP
Phase
110AMP
Direct Online Starter
Over Load
Relay Range
--AMP
Backup Fuse
(max.)
--AMP
Recommended Cable Size
--Sq. MM Al --
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
70 - 100AMP
Backup Fuse
(max.)
200AMP
Recommended Cable Size
Supply Side
185Sq. MM Al 150
Sq. MM Cu
Recommended Cable Size
Motor Side
95Sq. MM Al 70
Sq. MM Cu
Full Load Current
Line
229AMP
Phase
132.2AMP
Direct Online Starter
Over Load
Relay Range
--AMP
Backup Fuse
(max.)
--AMP
Recommended Cable Size
--Sq. MM Al --
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
90 - 135AMP
Backup Fuse
(max.)
250AMP
Recommended Cable Size
Supply Side
240Sq. MM Al 185
Sq. MM Cu
Recommended Cable Size
Motor Side
120Sq. MM Al 95
Sq. MM Cu
Full Load Current
Line
248AMP
Phase
143.2AMP
Direct Online Starter
Over Load
Relay Range
--AMP
Backup Fuse
(max.)
--AMP
Recommended Cable Size
--Sq. MM Al --
Sq. MM Cu
Star Delta Starter
Over Load
Relay Range
120 - 155AMP
Backup Fuse
(max.)
250AMP
Recommended Cable Size
Supply Side
240Sq. MM Al 185
Sq. MM Cu
Recommended Cable Size
Motor Side
120Sq. MM Al 95
Sq. MM Cu
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
132AMPs 132
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
96AMPs 98
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
144AMPs 131
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
112AMPs 98
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
119AMPs 108
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
94AMPs 96
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
156AMPs 156
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
114AMPs 121
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
175AMPs 150
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
138AMPs 124
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
144AMPs 132
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
113AMPs 117
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
186AMPs 198
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
135AMPs 150
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
206AMPs 194
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
169AMPs 156
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
174AMPs 162
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
133AMPs 142
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
228AMPs 246
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
166AMPs 187
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
256AMPs 244
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
200AMPs 188
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
210AMPs 198
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
164AMPs 179
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
264AMPs 294
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
198AMPs 230
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
300AMPs 288
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
238AMPs 231
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
252AMPs 240
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
196AMPs 221
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
300AMPs 336
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
225AMPs 268
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
344AMPs 331
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
262AMPs 262
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
288AMPs 276
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
223AMPs 257
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
336AMPs 384
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
253AMPs 309
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
388AMPs 381
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
300AMPs 300
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
324AMPs 318
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
249AMPs 292
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
366AMPs 444
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
286AMPs 360
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
438AMPs 438
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
344AMPs 344
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
360AMPs 366
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
282AMPs 337
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
414AMPs 510
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
332AMPs 433
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
506AMPs 512
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
400AMPs 406
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
414AMPs 426
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
326AMPs 399
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
450AMPs 570
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
376AMPs 501
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
562AMPs 581
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
444AMPs 456
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
462AMPs 480
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
367AMPs 455
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
480AMPs 660
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
431AMPs 596
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
612AMPs 662
AMPs
1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
481AMPs 525
AMPs
1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
510AMPs 546
AMPs
1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
418AMPs 530
AMPs
1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
564AMPs 708
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
490AMPs 693
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
570AMPs 825
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
557AMPs 814
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
660AMPs 945
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
600AMPs 890
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 1-Core Cu PVC / XLPE Arm./Unarm. Cable
723AMPs 1063
AMPs
1.1 kV 1-Core Al PVC / XLPE Arm./Unarm. Cable
650AMPs 1050
AMPs
1.1 kV 2-Core Cu PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 2-Core Al PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 3/3.5/4 - Core Cu PVC / XLPE Arm./Unarm. Cable
---- ----1.1 kV 3/3.5/4 - Core Al PVC / XLPE Arm./Unarm. Cable
---- ----- Figures in Black are Current Rating for Cables laid in Ground
- Figures in Red are Current Rating for Cables laid in Air
- For Approx, current rating for Power cables with Copper Conductors increases over the above rating by 25%
- The above rating are normal rating & will subject to de rating factors for various conditions as per IS:3961
Building Wire - FR
Single Core, Twin Insulated Wires In Voltage Grade 650/1100 V. (FR)
Nominal Cross Section Area Of Conductor | Resistance (Max.) / km. @20°C | Current Carrying Capacity |
---|---|---|
Sq. mm | Ohms / Km | AMPs |
0.75 | 26.00 | 8 |
1.0 | 18.10 | 13 |
1.5 | 13.30 | 17 |
2.5 | 7.98 | 24 |
4.0 | 4.95 | 31 |
6.0 | 3.30 | 40 |