Ensure proper installation, isolation, labeling, grounding, and use of personal protective equipment to safely work with high and low voltage distribution boxes.

General Safety Principles

• Use appropriate materials: Distribution boxes should be made of steel or insulating plates; wood is not suitable due to fire and insulation risks .
• Proper installation: Boxes must be installed upright, firmly, and at recommended heights—fixed boxes 1.3–1.5m above ground, mobile boxes 0.6–1.5m .
• Avoid improper connections: Never plug power cords directly into high-voltage cabinets .
• Maintain spacing: Keep distribution and switch boxes within 30m of each other to ensure safe operation .

High Voltage Safety Tips

• Circuit protection: Ensure circuit breakers and protective relays are functional to automatically cut off power during overloads or faults .
• Insulation and grounding: Use high-quality insulation materials and proper grounding systems to prevent electric shock .
• Isolation in mixed installations: Physically separate high-voltage (≥380V) and low-voltage (≤24V) areas using flame-retardant isolation plates and maintain ≥5cm distance from terminals .
• Terminal protection: Use high-voltage terminals with insulation shields and maintain ≥8cm safe spacing from low-voltage terminals .
• Warning labels: Clearly mark high-voltage areas with red labels and color-coded identification tubes on wires .

Low Voltage Safety Tips

• Inspect equipment: Regularly check cords, plugs, and receptacles for damage before use .
• Use PPE: Wear arc-rated clothing, gloves, and eye protection when working on low-voltage systems .
• De-energize before contact: Never touch exposed wiring without proper de-energization and lockout/tagout procedures .
• Follow standards: Adhere to NEC, IEC, and local electrical codes to ensure safe design, labeling, and maintenance .
• Safe maintenance access: Maintain clear working space around boxes to prevent accidental contact and allow safe operation .

Operational and Maintenance Tips

• Regular inspections: Check for overheating, loose connections, or signs of wear to prevent failures .
• Load verification: Confirm voltage and current ratings match the expected load to avoid overheating or equipment damage .
• Arc flash precautions: Conduct hazard analysis to determine required PPE and prevent burn injuries .
• Training: Ensure all personnel receive comprehensive electrical safety training and understand emergency procedures . By following these guidelines, you can minimize the risk of electric shock, fire, and equipment damage while maintaining reliable operation of both high and low voltage distribution systems. Proper isolation, labeling, grounding, and PPE use are critical for safe electrical work.