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Note the following during ground connection:
• Observe specific codes and regulations of the country/region where the project
is located to perform ground connections.
• All grounding connections inside the PV system must be secure and reliable.
• Measure to ensure the ground resistance is no more than 4Ω after ground
connection.
6.4.1 Overview
There are two grounding methods: fixing by welding with grounding flat steel and fixing with
grounding cable.
Before proceeding with the ground connection, tear off the protective film on
grounding point.
After grounding is completed, whether made by using the flat steel or grounding
cable, the exposed metal surface, except the fixing point of grounding connection,
needs to go through anti-corrosion treatment.
6.4.2 Grounding Flat Steel
Weld 2.36 inch x 3.94 inch ( 60mm x 100mm ) hot-dip galvanized flat steel to the grounding
point.
6.4.3 Grounding Cable
Use 1AWG ~3/0 AWG (50 mm
2
~ 95mm
2
) grounding cables to reliably connect the two
grounding terminals to the grounding points of the system.
System Manual 6 Electrical Connection
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