Power Lines
April 8, 1944
16m
Overview
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.
Directed by
Where to watch
In United States
Not available to stream, rent, or buy in United States right now.
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