Single-line diagram editor allows you to automatically generate a single-line diagram for a design, then edit, connect, and add additional components.
Note: Single-line diagram editor is only available in Europe.
In this article, we’ll cover:
Accessing Single-Line Diagrams
After designing your PV system in Design Mode, click on the single-line diagram icon in the top navigation menu.
This will automatically generate a single-line diagram including the panels, inverters, and other components that were added in the System design page.
Adding and Editing Components
Aurora allows you to add, edit, and connect components to the single-line diagram that were not added when designing the system. These components and descriptions will be displayed on the Equipment Schedule table when previewing and downloading the final single-line diagram.
Note: Some components can only be added in the System design page. These will be automatically generated and editable in the single-line diagram, but cannot be added directly from the single-line diagram editor:
- Panels
- Inverters
- Combiner boxes
- Main service panel
- Meter-main
- Main service disconnect
Load Center
Note: If you have more than one inverter you would need to add a load center before connecting to the breaker.
The load center (or electrical panel) is the central hub for a home’s electrical system. This is the point where electricity, from the utility grid or the solar PV system, is distributed to all different circuits that power the home.
| Fields | Description | Editable Options |
| Busbar rating | Maximum continuous current that the main internal conductive bars within the load center can safely carry without overheating | 100A - 400A |
| Busbar feed location | Where the power is introduced to the main busbar within the load center. It dictates which end of the busbar receives the power first |
|
| Short circuit current rating | Maximum amount of current that the load center can safely withstand during a short circuit event without sustaining permanent damage. |
|
| Exists | Indicates whether or not the load center already exists at the site. | Toggle ON or OFF |
| Indoors | Indicates whether or not the load center is located indoors. | Toggle ON or OFF |
| Main breaker | Indicates whether or not the main breaker is located in the load center. | Toggle ON or OFF |
| Main breaker rating | The continuous current that the main breaker is designed to carry without tripping | 100A - 225A |
| Ampere Interrupting Capacity (AIC) | The maximum short-circuit current that a circuit breaker (including the main breaker) can safely interrupt without being destroyed. |
|
Disconnect
A disconnect is a safety device designed to completely isolate an electrical circuit or piece of equipment from its power source. Typically located between the solar inverter and the utility meter or main load center.
- Fused: include fuses within the same enclosure, providing overcurrent protection in addition to the disconnecting function
- Not fused: only isolate power and rely on upstream circuit breakers or fuses for overcurrent protection
| Field | Description | Editable Options |
| Fused | Indicates whether or not the disconnect is fused. | Toggle ON or OFF |
| Fuse rating | The current that the fuse can carry continuously. | Enter a number in amperes (A) |
Battery
Add a battery and connect to other components. Enter the battery name into the description.
Meter
A meter is a device that measures the amount of electricity consumed or produced over a period of time. There are 3 types of meters:
- Production: a meter that only measures the total amount of electricity produced by the solar PV system, typically located on the AC side of your solar inverter before the power feeds into the home’s main electrical panel or the grid
- Consumption: a meter that measures the total amount of electricity being consumed by the home’s appliances and electrical devices, typically located at the main service entrance of the home
- Bidirectional: a meter that measures electricity in both directions – drawn from the grid and exported to the grid, located at the point where the home connects to the grid
| Field | Description | Editable Options |
| Ownership | Indicates who owns the meter |
|
| Meter number | Specifies the meter number | Enter a number |
| Measurement | Indicates the electricity flow that the meter is measuring. |
|
| Exists | Indicates whether or not the meter already exists at the site. | Toggle ON or OFF |
Grid Connection
The grid connection is the point at which the home is connected to the utility grid.
Other Components (Shapes)
Add custom shapes to represent non-CAD components such as heat pumps, EV chargers, etc.
Click the Shapes icon and drag onto your single-line diagram, then connect to other components as needed.
Text
Add text to provide supplementary details where needed.
Click the Text icon and drag onto your single-line diagram, then type in the text.
Wiring
Click on any component and add a wire to connect with other components.
Wiring Details
Click on any wire to specify the wire type and size. This information will be displayed on the Conductor / Conduit Schedule table in the final single-line diagram.
| Field | Description | Editable Options |
| Type | Specifies the type of wire being used in the connection. |
|
| Size | Specifies the size of wire being used in the connection. |
|
Grounding Wires
Click on any component and select the grounding icon to add a grounding wire.
You can also select any wire, and click on the grounding icon in the middle to add a grounding point.
Preview and Download
When you’ve finished editing the single-line diagram, click Preview.
This will include numbered tags for all wires and lettered tags for all components to ensure registration compliance, as well as a breakdown of the Conductor/Conduit Schedule and Equipment Schedule. Your company logo, customer information, and system details will also be included.
Click Download > PDF to export the single-line diagram to your device.
FAQ
Can I reuse an SLD setup for another project?
Yes! See this article on creating and using SLD templates.
Can I add batteries in CAD?
Not at this time. Batteries will need to be added and connected in the single-line diagram editor.
Can I remove the Conductor/Conduit Schedule if I don’t specify the wiring?
This table will be automatically populated when entering the wire types and sizes, but will be left blank if there are no inputs added. It cannot be removed at this time.