In installing a telephone system in a building, PABX is used up to the riser (conduit is used) and telephone wires are distributed through a 66-block after cables run through cable trays. Is this a good distribution path with all the equipment stated?

In installing a telephone system in a building, PABX is used up to the riser (conduit is used) and telephone wires are distributed through a 66-block after cables run through cable trays. Is this a good distribution path with all the equipment stated?

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter16: Branch Circuits For The Garage And Outdoors

Section: Chapter Questions

Problem 5R

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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.

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