From 130.5 (c) Equipment sucha s switchboars, panelboards, industrial control panels, meter socket enclosures, and other motor control centers that are in other than dwelling units, and are likley to require examination, adjustment, servicing, or maintenance while eneergized, shall be filed marked with a label containing all the following.....
1. At least 1 of the following
a. Avaible incident energy & workig distance
b. Min arc rate clothing
c. Required leve of PPE
d. Highest hazard/risk cat
2. Nom sys voltage
3. Arc flash boundary