Cable - Ground Wire Tab
Figure 1: Ground Wire Tab
Option | Description |
---|---|
Type (AC cable only) |
Ground conductor type (none, interstitial, separate, or as part of a group of conductors). This choice has an effect on the zero sequence impedance calculation. See Reference2 below for more information on ground impedance calculations. None: No ground conductor. Interstitial: The ground wires in a three conductor cable (or IAA, IAS, CLX, TEC). Typically, there are three bare ground wires spaced evenly between the phase conductors.
Figure 2: Interstitial Ground Separate: A separate ground conductor in a conduit for a specific circuit.
Figure 3: Separate Ground Group: A ground conductor in a duct bank or tray that is used for multiple circuits. |
Num |
Number of ground wires in the circuit. This value is for reference only and does not affect analysis. |
Size |
Ground conductor size. This value is for reference only and does not affect analysis. Note: The size of ground wire may not have a direct influence on the effective zero sequence resistance (R0) and reactance (X0). Refer to Kaufmann’s paper2 on grounding. For steel conduits, ground currents flow through the conduit close to the outer surface because of skin effect. |
Material |
Ground conductor material. This value is for reference only and does not affect analysis. |
Insulation |
Type of insulation for the ground wire. Select <None> for bare conductor. This value is for reference only and does not affect analysis. |
Reference:
2 Let's Be More Specific About Equipment Grounding, R.H. Kaufmann, General Electric Co., GER 1974
More Information
- Cable Data
- Database Dialog Box Toolbar
- Cable - Connection Information
- Cable - Specifications 1 Tab
- Cable - Specifications 2 Tab
- Cable - Neutral Wire Tab (AC only)
- Cable - Harmonics Tab (AC only)
- Cable - Reliability Tab
- Cable - Comments Tab
- Cable - Hyperlinks Tab
- Cable - Collected Data Tab
- Cable - Media Gallery Tab
- Cable - Appearance Tab