Planning & EstimatingQuestion 412 of 521
For 120/240 V equipment likely to require examination while energized (Condition 1), what is the minimum depth of working space in front of it?
a.3 ft
b.2 ft
c.4 ft
d.1 ft
Explanation
Under Condition 1, the minimum working-space depth for equipment operating at 0-150 V to ground is 3 ft. Two feet or one foot is too little, and 4 ft applies to higher-voltage or worse conditions.
Law Reference: 2023 NEC §110.26(A)(1)Practice all 521 questions free — no signup required.
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