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Minimum allowable work space around electrical equipment

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    Minimum allowable work space around electrical equipment

    Codes and Standards
    The minimum allowable work space around electrical equipment is _____ inches wide.

    Your Answer: 36
    Help: Article 110: Requirements for Electrical Installations

    According to this article the answer is 36 inches
    https://www.mikeholt.com/instructor2...239-sample.pdf

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    Careful not to get width and depth confused.

    Width of Working Space.
    The width of the working space must be a minimum of 30 in., but in no case less than the width of the equipment.

    Click image for larger version. 

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    Depth of Working Space.
    The working space, which is measured from the enclosure front, must not be less than the distances contained in Table 110.26(A)(1).

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    Unless you have an engineer who has a electrical closet not big enough to swing a door open with an ATS and 2 subpanels in it

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    What about for around battery banks? Do you measure from the front of the rack or the back of the rack?

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    Quote Originally Posted by copes2680 View Post
    What about for around battery banks? Do you measure from the front of the rack or the back of the rack?
    Working clearance is measured from the edge of a battery rack. NFPA-70 Article 480.9(C)

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    Quote Originally Posted by SecondGen View Post
    Careful not to get width and depth confused.

    Width of Working Space.
    The width of the working space must be a minimum of 30 in., but in no case less than the width of the equipment.

    Click image for larger version. 

Name:	working-space-width-110.png 
Views:	557 
Size:	147.1 KB 
ID:	96

    Depth of Working Space.
    The working space, which is measured from the enclosure front, must not be less than the distances contained in Table 110.26(A)(1).

    Click image for larger version. 

Name:	working-space-depth-110.png 
Views:	727 
Size:	184.7 KB 
ID:	97
    I am a very visual person and this made it a lot easier to understand.

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