Quick Answer
To ensure safe operation and prevent electrical shock, bonding equipment in a solar array setup requires following specific guidelines, such as connecting all metal parts of the array, inverter, and grounding system to the same grounding point, and using a minimum of 6 AWG copper conductor for bonding.
Bonding Equipment in a Solar Array Setup
Bonding equipment in a solar array setup involves connecting all metal parts of the system to the ground, ensuring a safe and efficient operation. The National Electric Code (NEC) requires bonding all metal parts of the array, inverter, and grounding system to the same grounding point. This is typically done by connecting the array’s grounding system to the inverter’s grounding point.
Grounding System Requirements
A reliable grounding system is crucial in a solar array setup. According to the NEC, the grounding system should be sized to accommodate the maximum fault current of the system, which is typically 150% of the inverter’s maximum output current. For example, if the inverter’s maximum output current is 25 amps, the grounding system should be rated for at least 37.5 amps.
Techniques for Bonding Equipment
To bond equipment in a solar array setup, use a minimum of 6 AWG copper conductor for bonding. Connect the bonding conductor to the grounding system and to all metal parts of the array, inverter, and other equipment. Use a suitable bonding clamp or connector to ensure secure connections. Additionally, ensure that all bonding connections are accessible for inspection and maintenance.
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