How do you ground a solar panel?

The traditional method for tying ground to the Solar Panel Frames and mounts is to daisy chain a grounding conductor connecting all of the metal components. An approved Grounding lug that is designed to press through the Anodized layer is used on each component. These lugs use stainless steel grub screws to prevent galvanic corrosion.

What are equipment grounding requirements for PV systems?

Equipment grounding requirements for PV systems are covered in 690.43. These requirements include the bonding and grounding requirements for exposed metal parts of PV systems such as metallic module frames, electrical equipment, and conductor enclosures [690.43 (A)].

Why is grounding and bonding a PV system difficult?

A number of factors make the grounding and bonding of a PV system difficult. PV systems are exposed to the elements, which can result in atypical situations where the usual practices for bonding may not perform as intended.

How does a PV inverter work?

This allows the EGC of the PV circuit to be connected to the grounding point provided by the inverter, eliminating the need for a separate DC grounding system. The grounding point of the inverter is connected onwards to the grounding system or grounding electrode of the residential facility or building (see figure below).

How do you bond a PV module to a metal frame?

A decade ago, it was common practice to bond the metal frames of PV modules by drilling and tapping a hole in the aluminum frame of each module, fastening a lay-in lug to each, and then connecting those lugs with a bare, stranded, copper conductor.

How does a PV system work?

In fact, most PV systems are simply a supply of current to the electrical distribution equipment in a building, reducing the amount of current supplied by the service conductors. For most systems, a utility outage instantly shuts down the PV system, preventing it from continuing to supply current to the building.