• Created Date
  • 1924
  • Description
  • Photographs of the Skagit River Hydroelectric Project constructed between 1918-1961. Seattle City Light's North Substation was completed ca. 1924 and was located north of Green Lake at East 75th Street.Transmission buses are steel structure arrays of switches used to route power in a substation.Oil circuit breakers are used to switch circuits and equipment in and out of a system in a substation. They are oil filled to provide cooling and to pr... more
    Photographs of the Skagit River Hydroelectric Project constructed between 1918-1961. Seattle City Light's North Substation was completed ca. 1924 and was located north of Green Lake at East 75th Street.Transmission buses are steel structure arrays of switches used to route power in a substation.Oil circuit breakers are used to switch circuits and equipment in and out of a system in a substation. They are oil filled to provide cooling and to prevent arcing when the switch is activated. Caption on image: 5240Caption below image: Arrangement H.T. Bus, No. Substation - 165KV line, 154 KV G-2 oil circuit breakersPH Coll 45.1-3. less
  • Format
  • Photograph
    image
    silver gelatin, b&w
    Scanned from a photographic print using a Microtek Scanmaker 9600XL at 150 dpi in JPEG format at compression rate 3 and resized to 768x600 ppi. 2005