ForestGnome
New Member
NEC 2023, 690.41 (B) states:
Thanks!
I'm curious from a safety point of view why the NEC says it's fine to not have ground fault protection for ground-mounted string array. Why would adding an earth ground to single string PV system somehow make the system safe from ground faults? Is there something I'm missing?PV system dc circuits that exceed 30 volts or 8 amperes shall be provided with dc ground-fault protection meeting the requirements of 690.41(B)(1) and (B)(2) to reduce fire hazards.
Solidly grounded PV source circuits with not more than two modules in parallel and not on or in buildings shall be permitted without ground-fault protection.
Thanks!