Branch Circuits & WiringQuestion 157 of 521
The dedicated equipment space above a panelboard indoors extends from the top of the equipment to what height, or to the structural ceiling if lower?
a.3 ft
b.6 ft
c.4 ft
d.10 ft
Explanation
Section 110.26(E)(1)(a) requires the dedicated space above indoor electrical equipment such as panelboards to extend 6 ft above the equipment or to the structural ceiling, whichever is lower, kept clear of foreign piping and ducts. 3 and 4 ft are too little; 10 ft is more than the code requires.
Law Reference: 2023 NEC §110.26(E)Practice all 521 questions free — no signup required.
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