Transformer Racks Are Not Storage Racks

Transformers generate heat and need clear airflow. Storing anything on or beside them creates safety, reliability, and compliance risks. Follow these guidelines to protect people, equipment, and your bottom line.

Key Risks

• Fire Hazards: Combustible materials (cardboard, plastic, paper) can ignite when placed on or near an energized transformer.
• Overheating & Reduced Lifespan: Blocking vents disrupts natural or forced-air cooling. Heat buildup lowers efficiency and accelerates insulation breakdown.
• Electrical Hazards: Conductive items (metal tools, liquids) can cause arcing, short circuits, or electric shocks.
• Code Violations: CSA and NEC standards prohibit storing materials on or adjacent to electrical equipment.
• Equipment Malfunction: Excessive heat and foreign objects can damage internal components, leading to unexpected outages.
• Liability Exposure: Accidents tied to improper storage can trigger legal claims and insurance disputes.

What to Do:

1. Clear Transformer Racks: Remove all materials—especially boxes, tools, and fluids—from transformer surfaces and surrounding areas.
2. Train Your Team: Add transformer‑storage rules to safety briefings and toolbox talks.
3. Inspect Regularly: Include transformer‑area checks in your preventive maintenance schedule.
4. Document Compliance: Keep records of inspections and training to demonstrate adherence to CSA and NEC requirements.

A great example of how not to store goods near an electrical transformer.