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

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

Answer: (A)

Bonding jumpers must provide a reliable, low-impedance path and be appropriate for the environment where the PV equipment is installed. In PV systems, bonding ties together metal parts such as module frames, racking, enclosures, and DC or AC disconnects to keep everything at the same electrical potential. This minimizes shock risk and helps ensure that any fault current will quickly trip protective devices. Because outdoor installations face moisture, corrosion, temperature cycling, UV exposure, and potential physical damage, the jumpers and conductors used must be rated for those conditions and maintain continuity over time. Indoor-only jumpers might not withstand outdoor exposure, leading to degraded bonding. Therefore, the statement is true.