There are two different commands that will automatically insert a first draft of your one-line diagram for you. One or the other should roughly match the way you currently draw your one-line.

The  Generate One-Line command inserts your distribution equipment from the top of your page down.

The  Generate Riser command inserts your distribution equipment from left to right. The elevation of the distribution equipment in your model is used to arrange everything vertically on the page.

Each command inserts a specified piece of distribution equipment and everything connected to it. You can select the first piece of equipment that is connected to the utility to generate your whole one-line, or select something further down the tree to generate part of your one-line.

We recommend generating the whole one-line first. If the layout is close to what you want, start moving and adjust equipment to make it look right.

If the layout is not close, erase the whole thing, then insert separate pieces of the one-line. After you have inserted smaller sections, you can then generate from the first piece of equipment. All of the equipment you already inserted will stay where it is and only missing equipment will be added. This process should connect all of the different sections together.

As you make changes, you can run the Generate commands again to add missing distribution equipment. Anything that is already inserted will not be modified. Only missing equipment will be added.

Below are some of the options you can modify to get the generated one-line closer to your current standards. To access these options, run the Options command and find the One-Line Diagram section.

Generate One-Line Options

Layout of Bus Bar Horizontal Panels

There are two ways the horizontal panels that feed multiple downstream panels can be arranged. The whole bus can be horizontal, with the main breaker graphic on the horizontal bus, or there can be a vertical section of the bus with the main breaker on it connected to a horizontal bus.

Use the Include vertical main breaker on horizontal panels option to change between these two display options.

No Bus Bar on One-Line

If you do not want to display a bus bar on your panel, change the following options:

Set Include breaker graphics on feeder wires to No.

Set the default blocks to <Custom Panel Box>. You can either use the Default riser blocks to make this change for the Generate Riser and Generate One-Line command, or you can use the Default one-line blocks to make the change for just the Generate One-Line command. If you use the one-line block options, you need to make the change in two places: Default one-line blocks (multiple downstream panels) and Default one-line blocks (0 or 1 downstream panels).

Size and Spacing of Panel Boxes

If the graphics are not the right size, use the Default panel box height and Default panel box width commands to change them. These sizes are multiplied by the current drawing’s DIMSCALE value when the panels are inserted. The units should be equal to “inches on the printed page”, but that might vary depending upon how your drawings are set up. A space equal to the height is used between each row of the one-line. A space equal to the width is used between each piece of distribution equipment within a row.

Generate Riser Options

No Bus Bar on Riser

If you do not want to display a bus bar on your panel, change the following options:

Set Include breaker graphics on feeder wires to No.

Set the Default Riser Blocks to <Custom Panel Box>. With the default customization, this will change the blocks used for the Generate One-Line command as well. If you want to use different blocks for that command, make sure you change the Default one-line blocks from <Same as Riser Block> to a different value.

How Feeders Connect to Panels

There are a number of options that control how feeders connect to panels.

Incoming feeders can connect to the top or the bottom of the panel using the Default fed from (in automatic riser) option. Panels initially use this value to control how they are connected. It can be changed for individual panels using the  Panels command.

In the Panels dialog box, press the Plan View and One-Line Diagram Block Settings button and change the Initial Fed From (in Automatic Riser) field.

If panels have a bus, outgoing feeders are always connected perpendicular to the bus bar. The height of the panel will be increased if the feeders extend past the bottom of the panel.

If panels do not have a bus, the outgoing feeders can connect to either the side or the top/bottom of the panel graphic using the Default feeder connection layout option. If the Side option is used, the height of the panel will be increased if the feeders extend past the bottom of the panel. If the Top and bottom option is used, the spacing between feeders will be reduced if necessary so they all fit on the panel without changing its size.

Size of Panel Boxes

If the graphics are not the right size, use the Default panel box height and Default panel box width commands to change them. These sizes are multiplied by the current drawing’s DIMSCALE value when the panels are inserted. The units should be equal to “inches on the printed page”, but that might vary depending upon how your drawings are set up.

Spacing of Distribution Equipment

Distribution equipment at the same elevation uses the Default panel box width option to arrange the equipment horizontally.

Distribution equipment at different elevations use the Riser height multiplier option to control how far apart the equipment is inserted. This value does not correspond to any specific units. If the vertical spacing of equipment is not right, adjust the value, erase the equipment that was inserted on the drawing, then run the Generate Riser command again. Repeat this process until the vertical spacing looks right.

Spacing of Feeders

Use the Feeder offset multiplier option to change how far apart feeders are inserted from each other. The units should be equal to “inches on the printed page”. They will match the units used for your text height size.