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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