Which installation method minimizes corrosion in exposed wiring?

Using RMC (Rigid Metal Conduit) or PVC (Polyvinyl Chloride) conduit is an effective method for minimizing corrosion in exposed wiring. Both types of conduit provide a protective barrier for electrical conductors against environmental factors that can lead to corrosion.

RMC is typically made of steel, which is coated with a protective layer to inhibit rust and corrosion, especially in damp or harsh environments. PVC conduit, on the other hand, is inherently resistant to corrosion due to its non-metallic properties, making it an excellent choice for installations in wet or chemically aggressive areas.

In contrast, direct burial in soil and encasing in concrete may expose wires to conditions that can promote corrosion. While direct burial can protect wiring from physical damage, it does not provide the same level of protection against moisture and soil conditions that can cause corrosion over time. Similarly, while embedding wires in concrete may offer some protection, it is often not as effective as conduit systems, which are specifically designed to safeguard wiring from environmental elements.

By selecting RMC or PVC conduit for exposed wiring, compliance with electrical code requirements and recommendations is also ensured, further promoting safety and longevity of electrical installations.