Power Lines

Power Lines

Power Lines


(6 din 35 utilizatori)

0h 16m 1944 HD

Power Lines en PortalulTauTV. The manufacture of cables for transmitting electric power is shown. Copper bars are rolled and drawn into wire, which is twisted into strands, and covered for insulation and protection with layers of rubber, lead, cloth and paper. The completed cables are then given high-voltage tests before being dispatched from the factory.

Power Lines (1944)
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