Required Number of Anodes and Total Current Requirement

These calculations are the basis for cathodically protecting underground piping structures. Spacing requirements of anodes can drive up the costs of the cathodic protection impressed current systems.

The anode current output is calculated using Ohm’s Law,

𝐼_𝑎 — Anode current output(Amps)
𝐸 — Driving voltage(V)
𝑅 — Anode resistance to earth(Ohms)

Total current requirement and required number of anodes

𝐼_𝑇 — Total current required(Amps)
𝑁 — Required number of anodes

Input Parameters

To create a new case, click the “Add Case” button
Select the Required Number of Anodes and Total Current Requirement 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.

Driving Voltage
Anode Resistance to Earth
Total Current Requirement

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.

Required Number of Anodes

Required Number of Anodes and Total Current Requirement

Input Parameters

Outputs/Reports

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