Physics · Transmission and Distribution
As compared to a 2-wire DC distributor, a 3-wire DC distributor with the same maximum voltage to earth (assuming the neutral wire cross-section is half of the outer wire) uses only:
- 1125% of copper
- 266.7% of copper
- 333.3% of copper
- 431.25% of copper✓
Correct answer
31.25% of copper
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