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New Feeder IDs

Monday, October 10th, 2016

This page describes the changes to feeder IDs that were added in Design Master Electrical 8.4.7 and Design Master Electrical RT 1.1.5.

Previously, feeder IDs were assigned sequential to feeders in the project based upon ampacity. There were two main problems with this approach.

  1. Feeder IDs were not consistent across projects. A 200A feeder in one project would have a different ID from a 200A feeder in another projects.
  2. Feeder IDs would change when a new feeder size was added in the middle of a project. When the new feeder was in the middle of the feeder list, a lot of IDs would change. When issuing revisions, each ID would have to be marked as a change because a new ID was being used, even though the size did not change.

The new release provides control over the IDs assigned to each feeder size. A default ID for each feeder will be suggested. You have the option to use the default or change it if necessary. There are options to save the ID in the master database and to reuse the ID on other projects.

Current Projects

 

On currently started projects, the feeder ID options are set to maintain as much consistency with the old method as possible. The IDs of feeders that already exist in the project will remain the same. New IDs will be inserted at the end of the list. These ID will be created automatically without any input from you.

You will end up with an odd ordering of feeders in the feeder schedule. The feeders will be listed in order based upon the ID. In general, the IDs will be ordered based upon ampacity, but new IDs will be added to the end of the list. See the Sequential format section below for suggestions on how to manage your IDs.

New Projects

 

On new projects, the feeder ID options are set to take advantage of as many of the new features as possible.

The format is set to Short. The ID value will be based upon the ampacity of the feeder plus some extra descriptors based upon the configuration of the wires.

When a new ID is needed, you will be prompted for the name. The ID will be added to the master schedule when it is created.

IDs that already exist in the master schedule will be transferred to the project automatically.

Using New Feeder ID Features on Current Projects

 

You need to make the following changes to use the new feeder ID features on a current project.

Run the DM Electrical->Customization->Options->Edit Project List command. Go to the One-Line Diagram section. Scroll to the bottom of that section where you will find the following options to change.

Feeder ID format: Choose the feeder ID format you would like to use. If you are unsure of what to pick, we recommend changing this to Short. See the Feeder ID Formats section below for a description of the other choices.

Automatically create feeder IDs: Set to No.

Copy feeder IDs to master schedule when created: Set to Yes.

Transfer feeder IDs from master schedule if possible: Set to Yes.

Close the Options dialog after making these changes.

Run the DM Electrical->Customization->Feeder IDs->Edit Project List command. Press the Select Group command in the top-right. Then press the Edit Settings button. Change the Feeder ID Block based upon the current setting.

  • dm_elec-feederID-hex2: Change to dm_elec-feederID-hex3
  • dm_elec-feederID-rectangle: Change to dm_elec-feederID-rectangle3
  • dm_elec-feederID-rectangle2: Change to dm_elec-feederID-rectangle3
  • dm_elec-feederID-oval: Change to dm_elec-feederID-oval2

You have two choices for feeder IDs that have already been used in the project.

  1. Leave the current feeder IDs as they are. They will be numbered 1, 2, 3, and so on. Feeders that are added will have IDs based upon the format you chose. The current and added IDs will have different formats. The benefit to this choice is that you will not have to mark on IDs on your drawing as having changed. The drawback is that the format will be inconsistent for your IDs. To make this choice, do nothing. It will happen automatically.
  2. Change the current feeder IDs to match the new format. All your feeder IDs will use the format you selected. The benefit to this choice is that you will have a consistent format for all the IDs in your project. The drawback is that the ID for any currently created feeders will change. If you have published drawings, you might need to mark all of these IDs as changed in your next revision set. To make this choice, press the Delete Multiple button and delete all of the IDs.

Using New Feeder ID Features on Current Projects

 

Feeder ID Formats

There are four formats that can be used for the default feeder IDs that are generated.

Short

The Short format uses a compact format that attempts to also be descriptive of the feeder.

If you combine the wire count for neutral and hot wires, this format lists the ampacity of the feeder and the number of wires. Feeders with a ground do not have any additional information. Feeders without a ground have “U” added to the end of the ID.

If you separate the wire count for neutral and hot wires, this format lists the ampacity of the feeder. The number of hot wires is listed if it is 1 or 2. Feeders with a neutral or a ground do not have any additional information. Feeders without a neutral have a “D” added to the end of the ID. Feeders without a ground have “U” added to the end of the ID.

Long

The Long format uses a descriptive format for the feeder ID that is intended to be able to be easily understood without referring to the feeder schedule. The feeders are first labeled with the ampacity of the feeder.

Then the number of wires in the feeder is listed. If you combine the wire count for neutral and hot wires, this format lists the combined neutral plus hot wire count. If you do not combine the wire count for neutral and hot wires, this format lists the hot wire count and then a “N” if a neutral wire is included.

Finally a “G” is added if there is a ground.

Size + letter

The Size + letter format uses lists the ampacity then a single letter. The letter after the ampacity is consistent based upon the type of feeder, but is not intended to be descriptive by itself.

If you combine the wire count for neutral and hot wires, the following letters are used:

  • A: 2 wires, no ground
  • B: 2 wires, ground
  • C: 3 wires, no ground
  • D: 3 wires, ground
  • E: 4 wires, no ground
  • F: 4 wires, ground
  • G+: Other configurations as they come up in a project.

If you do not combine the wire count for neutral and hot wires, the following letters are used:

  • A: 1 hot wire, neutral, no ground
  • B: 1 hot wire, neutral, ground
  • C: 2 hot wires, no neutral, no ground
  • D: 2 hot wires, no neutral, ground
  • E: 2 hot wires, neutral, no ground
  • F: 2 hot wires, neutral, ground
  • G: 3 hot wires, no neutral, no ground
  • H: 3 hot wires, no neutral, ground
  • I: 3 hot wires, neutral, no ground
  • J: 3 hot wires, neutral, ground
  • K+: Other configurations as they come up in a project.

Sequential

The Sequential format uses a number for the ID. The IDs are generally ordered based upon the ampacity of the feeder. After the initial feeders are ordered, any new feeders are added to the end of the list. The IDs are stable during the project, but the list can end up with odd ordering depending upon how feeders are added to the project.

Before the first version of the drawing is published, you can delete all of the feeder IDs. A new set of IDs will be created for all feeders that are nicely order. New feeders that are added after that will be added out of order.

When the next version of the drawing is to be published, you can delete all of the feeder IDs that have been added. The original IDs will be in order, and the second set of IDs will be in order. This solution keeps IDs that have been published stable in the project. Use the Delete Multiple button in the DM Electrical->Customization->Feeder IDs->Edit Project List command to delete the IDs that need to be updated.

2 Responses to “New Feeder IDs”

  1. Bryant Jenks says:

    There is mention of “combine the wire count for neutral and hot wires” and “do not combine” changes the ID format. I am not sure what that means and how I would change that.

  2. In the electrical options, the “Circuits, Load Types, and Wire Sizes->Display neutral wire count separately from phase wire count” option is what that is referring to.

    Set to “yes”, you get callouts like “3#12, #12N, #12G”.

    Set to “no”, you get callouts like “4#12, #12G”.

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