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Re: SP style search light signal questions...
Author: Sp nut
Date: 12-29-2021 - 14:26

Signal cabinets typically contain(ed) the relays at the division of approach blocks and control points. The single case design was just relays and the secondary case also contained backup batteries. 120v power and code line were mostly provided from overhead wires until later underground upgrades
Jeff

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Subject Written By Date/Time (PST)
  SP style search light signal questions... Peter D. 12-27-2021 - 21:26
  Re: SP style search light signal questions... Sp nut 12-29-2021 - 14:26
  Re: SP style search light signal questions... Dr Zarkoff 12-29-2021 - 20:29


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