When installing a rapid shutdown system for a residential PV installation, at what distance from the array must voltage be reduced according to NEC 2017?

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Multiple choice — select the best answer

AWithin 3 feet of the array
BWithin 5 feet of the array
CWithin 10 feet of the array
DWithin 1 foot of the array

✓ Correct answer: D. Within 1 foot of the array NEC 2017 requires that PV system conductors more than 1 foot from the array must be reduced to 30V or less within 30 seconds during rapid shutdown.

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When installing a rapid shutdown system for a residential PV installation, at what distance from the array must voltage be reduced according to NEC 2017?

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