| DIAMETERS AND INCREASE IN DIAMETERS OF ENAMELLED ROUND COPPER WINDING WIRES | |||||||
| (METRIC SIZES) (BASIS : IS 13730-0-1) | |||||||
| Conductor Diameter (mm) | Conductor Tolerance (mm) | Grade 1 | Grade 2 | Grade 3 | |||
| Minimum Increase (mm) | Maximum Overall Dia. (mm) | Minimum Increase (mm) | Maximum Overall Dia. (mm) | Minimum Increase (mm) | Maximum Overall Dia. (mm) | ||
| 0.040 | - | - | 0.049 | - | 0.054 | - | - |
| 0.045 | - | - | 0.055 | - | 0.061 | - | - |
| 0.050 | - | - | 0.060 | - | 0.066 | - | - |
| 0.056 | - | - | 0.067 | - | 0.074 | - | - |
| 0.063 | - | - | 0.076 | - | 0.083 | - | - |
| 0.071 | 0.003 | 0.007 | 0.084 | 0.012 | 0.091 | 0.018 | 0.097 |
| 0.080 | 0.003 | 0.008 | 0.094 | 0.014 | 0.101 | 0.020 | 0.108 |
| 0.090 | 0.003 | 0.008 | 0.105 | 0.015 | 0.113 | 0.022 | 0.120 |
| 0.100 | 0.003 | 0.008 | 0.117 | 0.016 | 0.125 | 0.023 | 0.132 |
| 0.112 | 0.003 | 0.009 | 0.130 | 0.017 | 0.139 | 0.026 | 0.147 |
| 0.125 | 0.003 | 0.010 | 0.144 | 0.019 | 0.154 | 0.028 | 0.163 |
| 0.140 | 0.003 | 0.011 | 0.160 | 0.021 | 0.171 | 0.030 | 0.181 |
| 0.160 | 0.003 | 0.012 | 0.182 | 0.023 | 0.194 | 0.033 | 0.205 |
| 0.180 | 0.003 | 0.013 | 0.204 | 0.025 | 0.217 | 0.036 | 0.229 |
| 0.200 | 0.003 | 0.014 | 0.226 | 0.027 | 0.239 | 0.039 | 0.252 |
| 0.224 | 0.003 | 0.015 | 0.252 | 0.029 | 0.266 | 0.043 | 0.280 |
| 0.250 | 0.004 | 0.017 | 0.281 | 0.032 | 0.297 | 0.048 | 0.312 |
| 0.280 | 0.004 | 0.018 | 0.312 | 0.033 | 0.329 | 0.050 | 0.345 |
| 0.315 | 0.004 | 0.019 | 0.349 | 0.035 | 0.367 | 0.053 | 0.384 |
| 0.355 | 0.004 | 0.020 | 0.392 | 0.038 | 0.411 | 0.057 | 0.428 |
| 0.400 | 0.005 | 0.021 | 0.439 | 0.040 | 0.459 | 0.060 | 0.478 |
| 0.450 | 0.005 | 0.022 | 0.491 | 0.042 | 0.513 | 0.064 | 0.533 |
| 0.500 | 0.005 | 0.024 | 0.544 | 0.045 | 0.566 | 0.067 | 0.587 |
| 0.560 | 0.006 | 0.025 | 0.606 | 0.047 | 0.630 | 0.071 | 0.653 |
| 0.630 | 0.006 | 0.027 | 0.679 | 0.050 | 0.704 | 0.075 | 0.728 |
| 0.710 | 0.007 | 0.028 | 0.762 | 0.053 | 0.789 | 0.080 | 0.814 |
| 0.800 | 0.008 | 0.030 | 0.855 | 0.056 | 0.884 | 0.085 | 0.911 |
| 0.900 | 0.009 | 0.032 | 0.959 | 0.060 | 0.989 | 0.090 | 1.018 |
| 1.000 | 0.010 | 0.034 | 1.062 | 0.063 | 1.094 | 0.095 | 1.124 |
| 1.120 | 0.011 | 0.034 | 1.184 | 0.065 | 1.217 | 0.098 | 1.248 |
| 1.250 | 0.013 | 0.035 | 1.316 | 0.067 | 1.349 | 0.100 | 1.381 |
| 1.400 | 0.014 | 0.036 | 1.468 | 0.069 | 1.502 | 0.103 | 1.535 |
| 1.600 | 0.016 | 0.038 | 1.670 | 0.071 | 1.706 | 0.107 | 1.740 |
| 1.800 | 0.018 | 0.039 | 1.872 | 0.073 | 1.909 | 0.110 | 1.944 |
| 2.000 | 0.020 | 0.040 | 2.074 | 0.075 | 2.112 | 0.113 | 2.148 |
| 2.240 | 0.022 | 0.041 | 2.316 | 0.077 | 2.355 | 0.116 | 2.392 |
| 2.500 | 0.025 | 0.042 | 2.578 | 0.079 | 2.618 | 0.119 | 2.656 |
| 2.800 | 0.028 | 0.043 | 2.880 | 0.081 | 2.922 | 0.123 | 2.961 |
| 3.150 | 0.032 | 0.045 | 3.233 | 0.084 | 3.276 | 0.127 | 3.316 |
| 3.550 | 0.036 | 0.046 | 3.635 | 0.086 | 3.679 | 0.130 | 3.721 |
| 4.000 | 0.040 | 0.047 | 4.088 | 0.089 | 4.133 | 0.134 | 4.176 |
| 4.500 | 0.045 | 0.049 | 4.591 | 0.092 | 4.637 | 0.138 | 4.681 |
| 5.000 | 0.050 | 0.050 | 5.093 | 0.094 | 5.141 | 0.142 | 5.186 |
| Note : For intermidiate conductor diameters the minimum increase figure corresponding to the next largest nominal conductor diameter shall be taken. | |||||||
| Note: In view of continuous improvements in design & process specifications given above are subject to change without notice. | |||||||