Situations are sometimes met in service where aluminium bronze components are inadvertently exposed to electrical leakage currents either as a result of electrical faults resulting in current passing to earth, via a submerged pump for example, or as a result of incorrect positioning of impressed current cathodic protection equipment resulting in current passing from the water on to the metal equipment at one point and leaving it again at another. 

These conditions will accelerate attack of practically all metallic materials whether the current concerned is DC or AC. Aluminium bronze under these conditions will show local corrosion in the region affected by the current leakage, the corrosion usually taking the form of selective phase dealloying. The avoidance of this type of attack is obviously a matter of correct design and maintenance of the electrical equipment concerned.