Branch Circuits & WiringQuestion 173 of 521
What is the minimum working-space depth for electrical equipment operating at 151 to 600 volts to ground under Condition 2 (exposed live parts on one side and grounded parts on the other)?
a.3 ft
b.3.5 ft
c.4 ft
d.2.5 ft
Explanation
Table 110.26(A)(1) requires 3.5 ft of working clearance for 151-600 V to ground under Condition 2. Condition 1 at that voltage is 3 ft and Condition 3 is 4 ft. 2.5 ft is below any required minimum in this range.
Law Reference: 2023 NEC §110.26(A)(1)Practice all 521 questions free — no signup required.
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