Do Polycrystalline Panels Require Specific Mounting Systems?

Mounting System Considerations

When selecting a mounting system for polycrystalline panels, it’s essential to consider the panel’s weight, size, and design. Typically, polycrystalline panels are heavier and less flexible than monocrystalline panels, requiring more robust mounting systems. A minimum of 2-3 inches of clearance between the panel and the roof or ground is recommended to allow for thermal expansion and prevent damage.

Suitable Mounting Systems

Suitable mounting systems for polycrystalline panels include ballasted, flush, and tracking mounts. Ballasted mounts use weights or concrete to secure the panels, while flush mounts are designed to sit flat on the roof or ground. Tracking mounts, such as those using a single-axis or dual-axis mechanism, can improve energy output by following the sun’s movement. When choosing a mounting system, consider the wind speed, snow load, and structural integrity of the roof or ground.

Design and Installation Tips

When designing and installing a mounting system for polycrystalline panels, follow these best practices: ensure the mounting hardware is compatible with the panel’s frame, use a minimum of 2 inches of lag screws or bolts for roof-mounted systems, and maintain a 1/4 inch gap between panels to prevent shading and heat buildup. Additionally, ensure the mounting system is designed to accommodate the panel’s weight and wind loads, and consider using a grounding system to prevent electrical shock.