Single Line Diagrams
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      2. Single Line Diagrams

      Rules for Upstream & Downstream Connections

      This guide outlines the rules that determine connections upstream & downstream.

      In the Single Line Diagram, users have flexibility to add connections upstream & downstream based on code compliance. If a connection would result in a code violation, the option is not available. 

       

      Entity Rule / Code
      • Utility Transformers
      • Generators
      • Solar Arrays

      For Power Sources:

      • No upstream connections
      • Can have multiple downstream connections
      • EV Charger
      • Motor
      • Generic Load

      For Loads:

      • One upstream connection
      • No downstream connections 
      • DCAC Inverter
      • Panel
      • Transformer
      • One upstream connection
      • multiple downstream connections
      • Automatic Transfer Switch
      • Multiple upstream connections
      • One downstream connection
      • Switchboard
      • Junction Box
      • Multiple upstream connections
      • Multiple downstream connections
      • Disconnect
      • Meter
      • VFD
      • One upstream connection
      • One downstream connection