Bonding jumpers between equipment (modules and arrays of PV systems) are required to be effective in suitable for the location where installed.

• A. False
• B. Not specified
• C. True
• D. Only for outdoor installations

Answer: (C)

The main idea is that equipment bonding jumpers must provide a reliable, low-impedance bond that remains effective in the environment where the PV system is installed. In PV installations, these jumpers connect modules, arrays, and related equipment to ensure all conductive parts stay at the same electrical potential and to provide a dependable path for fault current so overcurrent protection can act properly. Because the location can expose components to outdoor weather, temperature swings, moisture, and corrosion, the jumpers must be rated and constructed for that environment. If the bonding conductors aren’t suitable for the site, the bond can degrade over time, compromising safety and system performance. Therefore, the requirement is that bonding jumpers be effective for the location, not limited to indoor or outdoor only, and not left unspecified.