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  1. dw24

    Subways - Type LSZH Cable/Raceway

    I am being told that type LSZH (low smoke, zero halogen) cable is required within subways? Can anyone provide a code reference to back this up? My current design calls for THHN/THWN, in RMC. Do I need to specify LSZH cable/raceway instead? Any insight would be appreciated.
  2. dw24

    Short-circuit study - Selective coordination vs. series rated

    When performing a short-circuit study, can someone explain the difference between selective coordination vs. series rated?

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