Calculate the resistance per-foot of a 250-KCMIL wire? Calculate the ohms/KFT of 250 KCMIL wire? Calculate the total resistance of 500 feet of 3/8" Cu wire. Find R total of a 2-wire circuit loaded to 200A, run in conduit between two panelboards 175 feet apart; supply is 240V and conductors are 250-KCMIL copper. Calculate the voltage drop of question #13. Is the Vd from question #14 within the 3% allowance recommended by the Code? #14 THHN Cu wire is to be run in a 150' raceway to supply a 120V/12A load.  Find the Vd and % Vd.  What would be the voltage drop @ 3% Vd in question #16?    What minimum AWG size would we use to limit Vd to 3% in question #16?

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HVDC

HVDC stands for high voltage direct current in the electric power transmission system. The high voltage direct current system uses direct current (DC) for the transmission of electrical power through transmission lines in contrast with the alternating current that is the AC system. The HVDC is used to transmit bulk power point-to-point through long distances transmission lines. Power is rapidly transferred because the efficiency of transmission lines is greatly increased over long distances due to HVDC lines.