What are Safety Guidelines for Mounting Bifacial Solar Arrays?

Secure Mounting and Clearance

When mounting bifacial solar arrays, it’s essential to follow the manufacturer’s guidelines for securing the array to prevent wind-induced tilting or uplift. This can be achieved by using a minimum of two anchor points per module, spaced at least 36 inches apart, and ensuring the array is level and plumb. Additionally, maintain a clearance of at least 3 feet from any obstructions, such as roofs, walls, or power lines, to prevent damage or entanglement.

Component Selection and Rating

Properly rated components are crucial for ensuring the safety and efficiency of bifacial solar arrays. When selecting mounting hardware, such as clamps, brackets, and fasteners, choose components that meet or exceed the requirements outlined in the National Electric Code (NEC) and the International Building Code (IBC). For example, a minimum of 3/8-inch diameter lag screws are recommended for securing bifacial modules to a solid roof deck. Furthermore, ensure that all electrical connections are made with approved connectors and wiring, and that the array is grounded according to local electrical codes.

Installation and Inspection

To ensure the safe and efficient installation of bifacial solar arrays, always follow a systematic approach. Start by inspecting the mounting surface for any signs of damage or rot, and address any issues before proceeding with the installation. During the installation process, verify that all components are properly rated and securely fastened, and that the array is level and plumb. Finally, inspect the array after completion to ensure that all connections are secure, and that the array is functioning as intended.