I have been told this section now requires TWO arc flash labels. One for operating a handle
like a disconnect and another for actually opening a live panel ? Is this true and do we have to
do TWO arc flash Studies ??
You can access the nfpa standards free through nfpa, just a little hard to page through.
How about NFPA 70E?
Not an electrician and do not deal with 70 much, but found this::
D Equipment Labeling. Electrical equipment such as switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers that are in other than dwelling units and that are likely to require examination, adjustment, servicing, or maintenance while energized shall be field-marked with a label containing all the following information:
There are a couple of good discussions on this subject in the forum, use the search function at the upper right hand corner of the page and enter "Arc Flash"
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