You are here: Home > Support > Knowledge Base > Feeder ID Formats

Feeder ID Formats

Thursday, July 25th, 2019

When feeder IDs are generated, you can set the naming conventions for the IDs in the project customization options.

Ribbon: DME/DMERT: Customization->Project Customization-> dm_dm-optionP Options

Pulldown Menu: DM Electrical/Electrical RT->Customization->Options->Edit Project List

In the One-Line Diagram section, find the Feeder ID format option and set the format you want to use.

If you need to change the feeder ID format after starting a project, see Changing Feeder ID Formats.

There are three additional options related to feeder IDs:

  • Automatically create feeder IDs: Sets whether feeder IDs are automatically generated based upon the selected Feeder ID format. If this is set to No, you will be prompted to define each feeder ID as it is generated. This is useful if you want to create custom feeder IDs; otherwise, set it to Yes.
  • Copy feeder IDs to master schedule when created / Transfer feeder IDs from master schedule if possible: These options help ensure consistent feeder IDs across projects. When both options are enabled, feeder IDs will be pulled from the master schedule if they exist for the feeder types in the project; if a feeder ID does not exist, it will be generated and copied to the master schedule for future projects. If Feeder ID format is set to Sequential, these options are disabled.

Short

The Short format uses a compact format that is also 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 an equipment ground (NEC 250.122) do not have any additional information. Feeders with a service ground (NEC 250.102) have “J” added to the end of the ID. Feeders without a ground have “U” added to the end of the ID. Feeders with an isolated ground have “I” 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 and an equipment ground (NEC 250.122) do not have any additional information. Feeders with two neutrals have “NN” added to the end of the ID. Feeders without a neutral have “D” added to the end of the ID. Feeders with a service ground (NEC 250.102) have “J” added to the end of the ID. Feeders without a ground have “U” added to the end of the ID. Feeders with an isolated ground have “I” added to the end of the ID.

If two feeders have the same wire counts and sizes but different ground types, separate IDs will be created (e.g., 80 and 80J).

If two feeders use the same ID but are different (e.g., same ampacity and wire count but different material), “.A” will be added to the end of the second ID. Subsequent IDs will have “.B”, “.C”, etc.

Long

The Long format uses a more descriptive format for the feeder ID that is meant to be easily understood without referring to the feeder schedule.

First, the feeders are labeled with the ampacity of the feeder.

Next, 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, followed by “N” if a neutral wire is included. Feeders with two neutrals have “NN” added to the end of the ID. Feeders without a neutral have “D” added to the end of the ID.

Finally, a “G” is added if there is an equipment ground (NEC 250.122). Feeders with a service ground (NEC 250.102) have “J” added to the end of the ID. Feeders with an isolated ground have “IG” added to the end of the ID.

If two feeders have the same wire counts and sizes but different ground types, separate IDs will be created (e.g., 80/3NG and 80/3NJ).

If two feeders use the same ID but are different (e.g., same ampacity and wire count but different material), “-A” will be added to the end of the second ID. Subsequent IDs will have “-B”, “-C”, etc.

Size + letter

The Size + letter format use lists the ampacity and 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.

See Working with Sequential Feeder IDs for the recommended workflow when using this format.

Related Articles

Filter by
Post Page
Electrical Electrical RT One-Line Diagrams RT One-Line Diagrams Training Recording Electrical RT Training Electrical Training
Sort by

Changing Feeder ID Formats

Changing your feeder ID format at the beginning of a project is simple; changing it mid-project requires deleting and redefining existing IDs.

18

Working with Sequential Feeder IDs

Unlike other feeder ID formats, special considerations apply when defining sequential feeder IDs.

14

Using Custom Feeder IDs

If you’re not happy with the built-in feeder ID formats, you can create your own custom feeder IDs.

14

One-Line Diagrams: Feeders

Here are commands you can use to modify feeders after they have been inserted on your one-line diagram.

8

Training Recording: Customizing Families (ft. Brian Muir)

This training video teaches you how to customize your families in Design Master Electrical for Revit, and more. This training was led by Brian Muir, P.Eng., of Muir Engineering.

0

Training Recording: Electrical Mailbag May 2020

This training video teaches you how to disconnect distribution equipment, configure feeder and service loads, and more in Design Master Electrical for AutoCAD.

0

Products

Electrical for Revit

Electrical for AutoCAD

HVAC for AutoCAD

Photometrics for AutoCAD

System Requirements

Support

Contact Support

Install & Update Instructions

Online Training

Knowledge Base

User Manuals

Tutorials

Release Notes

Downloads

Wish List

Remote Support

Company

About

Customer Stories

Awards

Newsletter

Blog

Pricing

Electrical for Revit

Electrical for AutoCAD

HVAC for AutoCAD

Photometrics for AutoCAD

Free Trial

Electrical for Revit

Electrical for AutoCAD

HVAC for AutoCAD

Photometrics for AutoCAD

©2001-2020, Design Master Software, Inc