Disconnection time 120 volts vs 150 volts

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mbrooke said:
Sahib, don't hold back :)
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There is a shortcut to calculating the short circuit current also discussed elsewhere in the forum. The formula readily does not come to my mind...........
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Ok. Take a resistance and apply it at the load point. Let the current drawn by the resistance be I and change in voltage at the load point be dV. Let the supply end voltage be V. Then short circuit current=(V*I)/dV.
 
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