Branch Circuits & WiringQuestion 133 of 521
What is the minimum depth of working space in front of electrical equipment operating at 0 to 150 volts to ground, where there are exposed live parts on one side and no live or grounded parts on the other (Condition 1)?
a.2.5 ft
b.3 ft
c.3.5 ft
d.4 ft
Explanation
Table 110.26(A)(1) requires a minimum working clearance of 3 ft (Condition 1) for equipment at 0-150 V to ground. This depth allows safe access for operation and maintenance. 2.5 ft is below the minimum; 3.5 and 4 ft apply to higher voltage or more hazardous conditions.
Law Reference: 2023 NEC §110.26(A)(1)Practice all 521 questions free — no signup required.
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