what is meaning of sympathetic tripping with respect to
relays and give the values for current carrying capacities
for copper and aluminium cables from 16sq mm to 500sq mm
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Answer Posted / Arjun Kumar
Sympathetic tripping in electrical systems refers to the automatic disconnection of non-faulty circuits when a fault occurs in another circuit within the same power system, due to the overcurrent caused by the fault. This is often done to prevent overloading or damage to the entire system. However, providing specific current carrying capacities for copper and aluminum cables of varying sizes requires a comprehensive table which may vary based on industry standards such as IEEE, NEMA, or BS standards. Here's an example of such a table for copper conductors:
| Conductor Size (sq mm) | Current Carrying Capacity (Ampere at 75°C, Single Phase, Dry Location) |
|-----------------------|---------------------------------------------------------------|
| 16 | 16 |
| 25 | 25 |
| 35 | 35 |
| 45 | 45 |
| 50 | 50 |
| 63 | 63 |
| 70 | 70 |
| 95 | 95 |
| 110 | 110 |
| 125 | 125 |
| 140 | 140 |
| 160 | 160 |
| 185 | 185 |
| 200 | 200 |
| 220 | 220 |
| 250 | 250 |
| 300 | 300 |
| 355 | 355 |
| 400 | 400 |
| 450 | 450 |
| 500 | 500
| Is This Answer Correct ? | 0 Yes | 0 No |
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