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A dc 3-wire distributor system requires how much of copper as compared with a dc 2-wire distributor system?

  • A dc 3-wire distributor system requires 5/16 copper as compared with a dc 2-wire distributor system.
  • The amount of copper required for a given current-carrying capacity in a DC distributor system is proportional to the cross-sectional area of the wire.
  • In a 2-wire system, the total cross-sectional area of the two wires is proportional to the total current, while in a 3-wire system, the total cross-sectional area of the three wires is proportional to the total current.
  • For a given current-carrying capacity, the cross-sectional area of each of the two power wires in a DC 2-wire distributor system is larger than that of each of the three wires in a DC 3-wire distributor system.