Educational

Courtesy of :Prof. Liew Ah Choy, MIESDept of Electrical Engineering National University of Singapore ABSTRACT This paper discusses the effects and consequences of adopting separate and common lightning and system earths. Recommendations of the various codes of practice on the subject are highlighted, The advantages of bonding lightning and system earths to form a common earth […]

Courtesy of : Prof. Liew Ah Choy, MIES Dept of Electrical Engineering National University of Singapore Basically, a good earth is required in any system to ensure safety of operating & maintenance staff and users in the presence of dangerous voltages. The practice of keeping different or separate earths, in particular lightning system and communications earths is based principally