When to use dielectric fittings?

Dielectric fittings are used when connecting dissimilar metals in Plumbing or electrical applications to prevent galvanic corrosion. They are essential in systems where copper and steel, for example, are joined, as the interaction can lead to corrosion of one of the metals. Additionally, dielectric fittings help maintain electrical insulation between conductive materials, ensuring safety and system integrity. It's advisable to use them in areas exposed to moisture or when long-term reliability is a concern.