Analytical   |  
 Get the electrical connected phases of the downstream node. 
 Namespace: Autodesk.Revit.DB.Electrical
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Parameters
- id ElementId
 - The downstream node id.
 
Return Value
ElectricalConnectedPhasesThe electrical connected phases of the downstream node.
| Exception | Condition | 
|---|---|
| ArgumentException | The id isn't a downstream node id of the power distributable node. | 
| ArgumentNullException | A non-optional argument was null | 
 If node B supplies from node A, node B is the downstream node of node A, and node A is the upstream node of node B. Usually one node may have many downstream nodes, but TransferSwitch can only have one downstream node.