Solar Bonding and Grounding Confusion in New Installation

Danyael

Hello everyone, I am currently working on a new solar installation project and I have some confusion regarding solar bonding and grounding. I understand that both are important for safety, but I am not fully clear on how they differ in practical implementation. From what I’ve learned, bonding connects all metallic parts to ensure they are at the same electrical potential, while grounding provides a path to safely discharge fault current into the earth. However, I’m unsure about best practices.

Can anyone guide me on:

1. Proper bonding techniques for solar panels and mounting structures
2. Grounding requirements for residential vs commercial systems
3. Common mistakes to avoid during installation

Any advice, diagrams, or real-world experience would be really helpful.

MGar

https://forum.solar-electric.com/discussion/9345/system-grounding

I ground the panel frames. To a good earth ground.

Add a simple disconnect switch near the panels, and a Surge Protectors for the + and - wires at the switch box, underground wire if possible then a Surge Protector again for backup(optional), then the DC breaker.

 They sell varies voltage Surge Protectors,  most SCC have these built in as last resort.

Always disconnect the switch when working with the MC4 connections