Which conditions should prompt the use of metal conduit over PVC?

Using metal conduit is particularly advisable in situations where there is a high risk of physical damage. Metal conduit provides superior durability and strength compared to PVC, making it more resilient in environments where it may be subjected to impact, abrasion, or other forms of physical stress.

In settings such as industrial areas, warehouses, or outdoor locations where equipment may routinely be moved or where machinery operates, the robust nature of metal conduit better protects electrical wiring from potential harm. Additionally, metal conduit can help shield the wiring from environmental factors like moisture and provides an effective ground path, enhancing overall electrical safety and integrity.

While factors such as cost, chemical exposure, and environmental regulations may influence conduit selection, the primary concern in high-risk areas remains the need for robust physical protection, making metal conduit the clear choice in these scenarios.