Power Lines (1944)

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.

Date de sortie
1944-04-08
Durée
16 min
Genres
Documentaire
Réalisateur
James E. Rogers

Distribution

Recommandés