On a recent project, I brought to the engineers attention that I believed we had a problem inside our high voltage switchgear vault. The room is approximatly 20' long, with 2 exits. the switchgear is 15' long, and the back of it is 6" off a concrete wall. (There are no renewable or adjustable parts to the back, it is a dead-front switchboard.) The front of the switchgear has only 5'4" of clear working space. I told them that this is a violation of NEC Table 110.34(A) Condition 2. Who's right? Any thoughts?
Clear Working Space
- Thread starter wellesley
- Start date
- Status
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: Clear Working Space
Added information:
The system would have to have a nominal voltage (line-to-line) above 15,590 volts, corresponding to a line-to-ground voltage of 9001 volts, in order to require more than 5 feet of working clearance.
[ January 19, 2004, 06:30 PM: Message edited by: charlie b ]
Can't tell. You didn't tell us what opinion(s) might have been given by the other party (parties) in this discussion. Specifically, you didn't tell us what "the engineer" said, after you brought this issue to his or her attention. Also, you didn't give us the voltage level of the "high voltage" system.
Added information:
The system would have to have a nominal voltage (line-to-line) above 15,590 volts, corresponding to a line-to-ground voltage of 9001 volts, in order to require more than 5 feet of working clearance.
[ January 19, 2004, 06:30 PM: Message edited by: charlie b ]
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