NEC Article 110.16 requires arc flash labels on electrical equipment to warn of potential hazards and specify the required personal protective equipment (PPE). This is critical for worker safety.
NEC Article 110.26(A)(1) specifies a minimum clearance of 36 inches in front of equipment operating at 480 volts to allow safe access for operation and maintenance.
GFCIs protect personnel by quickly disconnecting power if a ground fault (current leakage) occurs, reducing the risk of electric shock. They are mandatory in wet or damp locations per NEC Article 210.8.
Exposed live parts are a significant safety hazard. NEC Article 110.27 requires live parts to be enclosed or guarded to prevent accidental contact.
Without a specific arc flash study, default PPE for working near live equipment is based on general hazard levels. For 480 volts, NFPA 70E recommends full arc-rated PPE to protect against potential arc flash hazards.
