Solar bonding and grounding clarification for off-grid Victron system

DIY
1

Hello everyone,

I am setting up an off-grid solar system using Victron equipment and I need some clarification regarding proper bonding and grounding practices. My current setup includes solar panels mounted on a metal structure, connected to a charge controller and inverter system. I want to ensure that the grounding and bonding are done correctly for safety and system stability.

I have a few questions:

  1. Should the solar panel frames be bonded to the same earth grounding system as the inverter?
  2. Is it necessary to separately ground the DC side and AC side, or should they share a common grounding point?
  3. What is the recommended approach for bonding metal mounting structures in Victron-based systems?
  4. Are there any specific Victron guidelines or best practices I should follow for grounding in off-grid installations?

My goal is to ensure proper safety, avoid potential grounding loops, and maintain system reliability.

Any guidance or references would be greatly appreciated.

2

yes, but module frames need to go directly to the ground stake, not any internal busbar, as this is a lightning conductor.

They can have a common ground.

Grounds must be made with either a propper grounding device (module frames) or a crimped connection with nut, bot and spring washer.

Check the Victron Wiring unlimited book.