Discussion
Reducing that cable's current to 80 A by correcting the power factor changes the loss to
Answer: A
The square law gives \( 80^2 \times 0.05 = 320 \) watts, a reduction of thirty-six per cent for a twenty per cent reduction in current. That squaring is why correction at the load, rather than at the incoming panel, is worth so much on a long run.
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