NFPA 70E-2000
Covers electrical safety-related work practices and procedures for employees who work on or near exposed energized electrical conductors or circuit parts in work places

NEC-2000
Switchboards, panel boards, industrial control panels, and motor control centers. Shall be field marked to warn qualified persons of potential electric arc flash hazards

OSHA 1910
The employer shall ensure that each employee exposed to electric arcs shall not wear clothing that could increase the injury when exposed to these arcs.

IEEE 1584
This guide presents methods for the calculation of arc flash incident energy and arc flash boundaries in three-phase arc systems to which workers may be exposed.