Approximate fusing current 40SWG copper
Approximate fusing current of 40SWG copper wire is
Right Answer is:
3A
SOLUTION
- The fusing current of any wire is approximate 1.5 to twice the current rating of the fuse.
- The value of fusing factor is always greater than 1.
- The small the value of fusing factor, greater is the chance of deterioration of fusing element due to overheating and oxidation.
Fusing current = Current rating * Fusing factor
40 SWG copper wire has a current rating of 1.5 A.
Fusing current = 2 × current rating
Fusing current = 3 A
| Sr. No. | S.W.G. | Current Rating of Fuse (Amp) | Approx. Fusing Current (Amp) |
| 1 | 40 | 1.5 | 3 |
| 2 | 39 | 2.5 | 4 |
| 3 | 38 | 3.0 | 5 |
| 4 | 37 | 3.5 | 6 |
| 5 | 36 | 4.5 | 7 |
| 6 | 35 | 5.5 | 9 |
| 7 | 34 | 6.0 | 10 |
| 8 | 33 | 7.0 | 11 |
| 9 | 32 | 8.0 | 12 |
| 10 | 31 | 9.0 | 13 |