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What's Wrong Here?

May 9, 2005 11:39 AM, By Joe Tedesco

Answer:

All Code references are based on the 2005 NEC.

There is a clear violation of the working space about electrical equipment (operating up to 600V) requirements with this installation (see 110.26). The basic rule calls for "sufficient access and working space" be provided and maintained about "all" electric equipment to permit ready and safe operation and maintenance of such equipment.

More specifically, 110.26(A)(1), states “The depth of the working space in the direction of live parts shall not be less than that specified in Table 110.26(A)(1)(1) unless the requirements of 110.26(A)(1)(a), (A)(1)(b), or (A)(1)(c) are met. Distances shall be measured from the exposed live parts or from the enclosure or opening if the live parts are enclosed.”

This cabinet encloses lighting contactors, and the distance is improper when measured from these exposed live parts.

In addition, the width of the working space in front of this equipment does not permit at least a 90° opening of the equipment door or hinged panels. This requirement is noted in all cases.

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