Short Circuit Current Calculations - Eaton

Step 3. Determine by formula or Table 1 the transformer let-through short-circuit current. See Notes 3 and 4. Note 3.Utility voltages may vary ±10% for power and ±5.8% for 120 Volt lighting ser-vices. Therefore, for highest short circuit conditions, multiply values as calculated in step 3 by 1.1 or 1.058 respectively. ................
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