Mahesh Engineering Services - Indian House Wiring Specifications
Indian House Wiring Specifications
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2 min read
Indian House Wiring Specifications
Modern flexible wiring
| Nom. Cross section area of conductor in sq.mm | Current rating in amps. |
| 0.75 |
9 |
| 1 | 14 |
| 1.5 | 18 |
| 2.5 | 24 |
| 4 | 32 |
| 6 | 42 |
| 10 | 55 |
Traditional Wiring
| Number of Strands | Current Rating in amps |
| 1/18 | 5 |
| 3/22 | 10 |
| 3/20 | 15 |
| 7/22 | 20 |
| 7/20 | 28 |
| 7/18 | 36 |
| 7/16 | 53 |
| Cross section area, sq.mm. | Approx. AWG | Overall. Dia., mm Max.. | Insul. Thickness,mm, Nom. | Cond. Config. No. of wires/ max.dia.. | Cond. Resist., W/km At 20 C Max | Max. current rating, (A) | Approx. voltage drop per amp per meter, mV |
| 0.5 | 22 | 2.6 | 0.6 | 16/0.20 | 36.0 | 6 | 46.0 |
| 0.75 | 20 | 2.8 | 0.6 | 24/0.20 | 24.5 | 9 | 31.0 |
| 1.0 | 18 | 3.0 | 0.6 | 32/0.20 | 19.5 | 14 | 22.0 |
| 1.5 | 16 | 3.4 | 0.7 | 30/0.25 | 13.3 | 18 | 15.0 |
| 2.5 | 14 | 4.2 | 0.8 | 50/0.25 | 7.98 | 24 | 9.1 |
| 4.0 | 12 | 4.8 | 0.8 | 56/0.30 | 4.95 | 32 | 5.7 |
| 6.0 | 10 | 5.6 | 0.8 | 84/0.30 | 3.30 | 42 | 3.8 |
| 10.0 | 8 | 7.0 | 1.0 | 140/0.30 | 1.91 | 55 | 2.2 |
| 16.0 | 6 | 8.2 | 1.0 | 126/0.40 or 226/0.30 | 1.21 | 75 | 1.4 |
| 25.0 | 4 | 10.0 | 1.2 | 196/0.40 | 0.780 | 100 | 0.89 |
| 35.0 | 2 | 11.5 | 1.2 | 276/0.40 | 0.554 | 125 | 0.64 |
| 50.0 | 1 | 13.0 | 1.4 | 396/0.40 | 0.386 | 165 | 0.45 |
| 70.0 | 2/0 | 15.0 | 1.4 | 360/0.50 | 0.272 | 240 | 0.32 |
| 95.0 | 3/0 | 17.5 | 1.6 | 475/0.50 | 0.206 | 300 | 0.24 |
| 120 | 4/0 | 19.0 | 1.6 | 608/0.50 | 0.161 | 325 | 0.19 |
| 150 | - | 21.5 | 1.8 | 750/0.5 | 0.129 | 352 | 0.15 |
| 185 | - | 24.0 | 2.0 | 926/0.5 | 0.106 | 400 | 0.12 |
| 240 | - | 27.0 | 2.2 | 1200/0.5 | 0.0801 | 475 | 0.10 |
| 300 | 29.5 | 2.4 | 1500/0.5 | 0.0641 | 500 | 0.08 |
| Area of conductor | Short circuit current for 1 sec in amps |
| 0.5 | 48 |
| 0.75 | 72 |
| 1 | 115 |
| 1.5 | 170 |
| 2.5 | 280 |
| 4 | 460 |
| 6 | 690 |
| 10 | 1150 |
| Single Core Unsheathed Annealed copper
conductor as per BSS-2004/1961 voltage grade 1100 Volts. |
|||||
| No.of strand & Size of wire in inch |
Size in SWG |
Nominal area of Conductor in Sq.mm |
Thickness of Insulation in mm |
Nominal overall Dia in mm |
Current rating Amps |
| 1/0.044* |
1/18 |
1.0 |
1.05 |
3.30 |
5 |
| 1/0.046* |
1/17 |
1.1 |
1.05 |
3.70 |
7 |
| 3/0.029* |
3/22 |
1.3 |
1.05 |
3.50 |
10 |
| 3/0.036 |
3/20 |
2.0 |
1.20 |
4.85 |
16 |
| 3/0.036* |
3/20 |
2.0 |
1.05 |
3.90 |
15 |
| 7/0.029* |
7/22 |
3.0 |
1.15 |
4.80 |
20 |
| 7/0.036 |
7/20 |
4.5 |
1.30 |
6.10 |
29 |
| 7/0.036* |
7/20 |
4.5 |
1.15 |
5.20 |
28 |
| 7/0.044 |
7/18 |
7.0 |
1.30 |
6.50 |
36 |
| 7/0.064 |
7/16 |
15.0 |
1.30 |
8.70 |
53 |
| 19/0.044 |
19/18 |
19.0 |
1.30 |
10.40 |
62 |
| 19/0.064 |
19/16 |
40.0 |
1.30 |
12.70 |
97 |
| 19/0.083 |
19/14 |
65.0 |
1.40 |
16.50 |
140 |
| 37/0.064 |
37/16 |
75.0 |
1.55 |
17.30 |
158 |
| 37/0.083 |
37/14 |
130.0 |
1.70 |
22.50 |
218 |
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