Photovoltaic bracket grounding connection diagram

Does a photovoltaic system have a DC grounding system?

Photovoltaic systems having dc circuits and ac circuits with no direct connection between the dc grounded conductor and ac grounded conductor shall have a dc grounding system. The dc grounding system shall be bonded to the ac grounding system by one of the methods in (1), (2), or (3).

Why is proper grounding of a photovoltaic power system important?

Proper grounding of a photovoltaic (PV) power system is critical to ensuring the safety of the public during the installation’s decades-long life. Although all components of a PV system may not be fully functional for this period of time, the basic PV module can produce potentially dangerous currents and voltages for the life of the system.

What are the bonding and grounding requirements for PV systems?

The specific bonding and grounding requirements for PV systems in Article 690 are in Part V. Section 690.41 covers system grounding, allowing both grounded and ungrounded PV array conductors.

Which service box is required for parallel connection of solar photovoltaic systems?

For parallel connection of solar photovoltaic systems, depending on the point of connection, the utility disconnecting means may be required to be an approved service box, as per Diagrams B1 and B3. Diagram B1 shows the parallel connection of solar photovoltaic systems where the PV system is directly connected to the supply authority.

Which diagram shows a parallel connection of solar photovoltaic systems?

Diagram B2 shows the parallel connection of solar photovoltaic systems where the PV system is indirectly connected to the supply authority, on the load side of the service box. The utility disconnecting means is not required to be an approved service box.

How do PV array DC equipment grounding conductors work?

The PV array dc equipment grounding conductors, when connected to such inverters, have the array dc equipment grounding conductors connected to earth through the ac equipment grounding system and the existing ac grounding system. Additional grounding electrodes and grounding electrode conductors are not required, but may be used.