For solar rooftop installations, it's often unnecessary to install new AC earth pits. Existing AC earth pits, if designed properly to handle fault current, are usually sufficient. In a solar setup, the overall AC current in the circuit doesn't increase. Before solar, if 10A flowed in the AC circuit, the entire 10A came from the [...]
Technically Yes. All earthing pits should be bonded together so that there is equipotential bonding amongst them thus preventing back-feed from earth. However, some DISCOMs insist that DC earthing pits, AC earthing pits and LA pits should be kept separate. Please have a read of Legrand's Protection against Lightning Effects guide (Page 8) which [...]
With highly sensitive electrical and electronic components in solar installations, the need for protection of these costly equipment against fault and lightning current is very much necessary. Electrostatic discharge can damage sensitive electronic equipment and disturb the solar power supply. Any voltage difference between individual electronic units can destroy valuable equipment. In addition, noise [...]
