Definition
Module frame bonding is the electrical connection of all PV module aluminum frames to the equipment grounding conductor (EGC), providing a safety ground path. Required by NEC 690.43; commonly accomplished via UL 2703 listed racking systems.
Key Takeaways
- Module frame bonding = electrical ground path for module frames.
- Required by NEC 690.43.
- UL 2703 racking provides integrated bonding.
- Connects to EGC for shock safety.
- Documented on the SLD.
Frequently Asked Questions
2 commonly searched questions about Module Frame Bonding.
What is module frame bonding?
Electrical connection of all module aluminum frames to ground. Required by NEC 690.43 for shock and fault current path.
Methods?
UL 2703 listed racking with integrated bonding (most common). Cu lay-in lugs with through-bolts. Bonding washers (e.g., WEEB).
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