When conducting ground resistance testing on a PV system, what is the maximum acceptable ground resistance value according to most electrical codes?

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Multiple choice — select the best answer

A100 ohms
B1 ohm
C250 ohms
D25 ohms

✓ Correct answer: D. 25 ohms Most electrical codes specify that ground resistance should not exceed 25 ohms for general applications, though some critical installations may require lower values (typically 5-10 ohms).

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When conducting ground resistance testing on a PV system, what is the maximum acceptable ground resistance value according to most electrical codes?

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