In voltage drop calculation, drops are summed for feeders and branch circuits after multiplying current by distance and conductor resistance per length for how many directions?

In voltage drop calculation, drops are summed for feeders and branch circuits after multiplying current by distance and conductor resistance per length for how many directions?

• A. one direction
• B. two directions
• C. three directions
• D. both directions

Answer: (D)

The key idea is that voltage drop for feeders and branch circuits accounts for the current’s path through the whole loop, not just one conductor. You calculate the drop for each conductor by multiplying current, distance, and the conductor’s resistance per unit length, then add those drops for the complete loop. Since current flows from the source to the load and back through the return conductor, you must include drops in both directions. If the hot and neutral have the same resistance per length, the total drop is roughly twice the drop of a single conductor, reflecting the two directions of the loop. So the correct concept is that drops are summed for both directions.

The key idea is that voltage drop for feeders and branch circuits accounts for the current’s path through the whole loop, not just one conductor. You calculate the drop for each conductor by multiplying current, distance, and the conductor’s resistance per unit length, then add those drops for the complete loop. Since current flows from the source to the load and back through the return conductor, you must include drops in both directions. If the hot and neutral have the same resistance per length, the total drop is roughly twice the drop of a single conductor, reflecting the two directions of the loop. So the correct concept is that drops are summed for both directions.