Wayne's Word Index Noteworthy Plants Trivia Lemnaceae Biology 101 Botany Scenic Wildflowers Trains Spiders & Insects Search      Animated Lightning Page With Explanation Of Lightning       Images Of Lightning Bolts & Pine Tree Hit By Lightning   A Hollow Cable That Once Spanned The Hoover Dam Gorge Hoover Dam High Voltage Conductor A section of the original copper, overhead transmission line that carried electricity from Hoover Dam (syn. Boulder Dam) to Los Angeles. The high voltage cable is composed of ten segments to form a smooth copper tube 1.4 inches in diameter. Note the ingenious "tongue-and-groove" joints between the ten segments. This Type HH Hollow Conductor was made by General Cable during the early 1930s, and was designed to transmit 287,500 volts aross the Mojave Desert. The cable is hollow because most of the electricity flows through the outer surface (periphery). In addition, the hollow cable drastically reduced the weight burden on transmission towers. Back To Animated Lightning Go To The WAYNE'S WORD Home Page Go To The NOTEWORTHY PLANTS Page Go To The Biology GEE WHIZ Trivia Page All text material & images on these pages copyright © W.P. Armstrong