Dwight's equation has been used for many years to calculate the resistance of cathodic protection anodes. This formula has given satisfactory results in most applications. In recent years, higher current output requirements have stimulated development of new anode materials and shapes. Field tests of very large anodes (in the 400 amp, 20-foot long range) have shown that Dwight's equation predicts current outputs as much as 50% higher than actual anode outputs.

Subject
Cathodes, Water, Materials, Voltage, Linear anodes, Impressed current anodes, Anode resistance, Experimental data, Current densities, Anodic current, Impressed current, Electrolytes, Anodes
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1972
Association for Materials Protection and Performance (AMPP)
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