What issue could arise if proper spacing between electrical wiring and plumbing installations is not maintained?

The reason galvanic action is a concern when proper spacing between electrical wiring and plumbing installations is not maintained relates to the interaction between dissimilar metals in the presence of moisture or electrolytic solutions. When electrical wiring made of copper, for example, is installed too close to plumbing that contains metals like steel or brass, it can lead to electrochemical reactions. This process promotes corrosion at the junction where these two different metals come into contact, particularly if an electrolyte (like water) is present.

In this scenario, the plumbing metal can corrode more rapidly via the electrochemical process initiated by electric current unintentionally flowing through water or other conductive materials. Thus, maintaining adequate separation helps prevent this type of corrosion and avoid the deterioration of plumbing systems or the electrical wiring itself. This is essential for ensuring both the longevity and safety of electrical and plumbing systems within a structure.