Resistance to Earth of Multiple Horizontal Anodes

This calculation is used to calculate rectifier and ground bed sizing to protect large underground piping systems such as pump/compressor stations and large transmission piping systems.
These systems are not practical for 1 amp or less with low driving voltages. In addition, impressed current systems require an AC power source to operate a rectifier to convert AC to DC power.

Where:

R – Ground bed resistance(Ohms)
L – Anode length
ρ – Actual soil resitivity(ohm cm)
N – Number of anodes
S – Anode depth (2 x Length)
d – Diameter in feet
ln – Natural logarithm function

Note: For a more accurate assessment on different anode configurations and spacing, NACE horizontal design charts are recommended.

Input Parameters

To create a new case, click the “Add Case” button
Select the Resistance to Earth of an Impressed Anode Ground Bed application from the Cathodic Protection module list.
Enter Case Name, Location, Date and any necessary notes.
Fill out all required fields.
Make sure the values you are inputting are in the correct units.
Click the CALCULATE button.

Resistance to Earth for One Installed Anode
Soil Resistivity
Correction Factor for Anode Grouping
Number of Anodes

Outputs/Reports

View the results.
If an input parameter needs to be edited be sure to hit the CALCULATE button after the change.
To SAVE, fill out all required case details then click the SAVE button.
To rename an existing file, click the SAVE As button. Provide all case info then click SAVE.
To generate a REPORT, click the REPORT button.
The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon.
To delete a case, click the DELETE icon near the top of the widget.

Total Ground Bed to Earth Resistance

Resistance to Earth of Multiple Horizontal Anodes

Input Parameters

Outputs/Reports

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