Branch Circuits & WiringQuestion 134 of 521
The width of the working space in front of electrical equipment must be at least the width of the equipment or what minimum, whichever is greater?
a.24 in
b.28 in
c.30 in
d.36 in
Explanation
Section 110.26(A)(2) requires the working space width to be the width of the equipment or 30 in, whichever is greater. The space must also permit at least a 90-degree opening of equipment doors. 24 and 28 in are below the minimum; 36 in is more than required.
Law Reference: 2023 NEC §110.26(A)(2)Practice all 521 questions free — no signup required.
Related questions on this topic
- For a one-family dwelling, how many outdoor receptacle outlets are required, and where?
- In a dwelling, a hallway of what length or more must have at least one receptacle outlet?
- 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)?
- What is the minimum height (headroom) of the working space about electrical equipment such as panelboards, generally required by 110.26?
- Electrical metallic tubing (EMT) must be securely fastened within what distance of each outlet box, junction box, or fitting?
- After the required fastening near boxes, EMT must be supported at intervals not exceeding what distance?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-10 Electrical Trade Examination · How we review