You are here: Home > Support > Knowledge Base > Setting the Default Breaker Size for Panels

Setting the Default Breaker Size for Panels

Thursday, April 1st, 2010

Design Master Electrical uses the smallest standard breaker as the default breaker size for panels. Circuits with no load attached will have breakers of this size.

To set the default breaker sizes, use the Wire Sizing command.

Ribbon: DME: Customization->Project Customization-> dm_elec-wireP Wire Sizing

Pulldown Menu: DM Electrical->Customization->Wire Sizing->Edit Project List

In the grid at the bottom of the dialog box, there are three columns for setting standard breaker sizes:

  • Standard Branch Circuit: This breaker size is automatically used when sizing standard branch circuits.
  • Equipment Branch Circuit: This breaker size is automatically used when sizing equipment connection circuits.
  • Standard Feeder: This breaker size is automatically used when sizing distribution equipment feeders.

The breaker sizes that are checked here are used when automatically sizing breakers. The smallest one is used as the default.

Often, a project requires 20A breakers at minimum, but the project is inserting 15A breakers. To fix this, run the Wire Sizing command and uncheck the boxes for the 15 amperages. The breakers will update the next time loads are calculated.

Related Articles

Filter by
Post Page
Distribution Equipment (Panels and Transformers) Circuiting Electrical Electrical RT
Sort by

Typical “General Lighting Circuit” Settings

This is how the General Light Circuit settings are configured for most projects.

24

Setting the Phase of Single-Phase Loads on Three-Phase Switchboards

For single-phase loads, you can specify the phase using the Starting Phase setting in the Circuiting dialog box.

24

Residential Feeder Load Calculation Quick Start

This is the workflow we recommend for setting residential feeder loads in your project.

14

4-Pole Transfer Switches

Design Master does not offer 4-pole voltage options for transfer switches; however, you can safely model them using a 3-pole voltage and notes.

8

Multi-Section Panels

Multi-section devices can either be modeled as one large device, or as separate devices connected via feedthrough.

8

Voltage Drop and Transformers Options

There are three options available for calculating voltage drop at transformers, depending on how your transformers are configured.

8

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

866-516-9497
Billing
1010 B Ave S
Edmonds, WA 98020
Sales and Support
1151 Executive Circle, Suite 201B
Cary, NC 27511
support@designmaster.biz

©2001-2022, Design Master Software, Inc