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What are the advantages and disadvantages of overhead and underground transmission line?

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Question added by نشمي العباد , Electrical Field Engineer , KCC
Date Posted: 2016/01/06
muhammad iqbal
by muhammad iqbal , Electrical Engineer , M C DEAN INC< USA

Cost is the major factor. For long transmission system, and higher voltages, overhead are more cost effective. For local distribution, Under Ground Cables System is advantageous for planning , security/safety and many other reasons..

Underground distribution pros: - esthetically preferable - requires smaller right-of-way - right-of-way can be shared - fewer problems with vegetation, automobile accidents, lightning, or vandalism Underground distribution cons: - higher cost of construction - higher repair cost - potential risk from careless digging

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