Many electricians and EV charger installers place protection components close together in a distribution board. However, at Innovative Green Power (IGP), we intentionally leave gaps between especially for the single-phase Miniature Circuit Breaker (MCB) and Residual Current Circuit Breaker (RCCB) in 7kW EV charging installations.
Here’s Why:
1. Better Heat Dissipation
Electrical components generate heat during operation, especially under continuous load. Spacing protection devices apart improves air circulation and reduces thermal stress, enhancing component lifespan. (IEC 61439-1, Low-Voltage Switchgear & Controlgear Assemblies)
2. Minimized Electromagnetic Interference (EMI)
MCBs and RCCBs function differently—one handles overcurrent, while the other detects leakage. Placing them too close can cause unwanted electromagnetic interference, affecting RCCB sensitivity. (Schneider Electric, Residual Current Devices: Understanding the Basics)
3. Easier Troubleshooting & Maintenance
Proper spacing allows for better thermal imaging inspections, easier access to components, and safer maintenance. (NFPA 70B, Recommended Practice for Electrical Equipment Maintenance)
4. Alignment with Industry Best Practices
Electrical design guides recommend spacing components for better heat management, safer operation, and easier fault diagnosis. (ABB Electrical Installation Guide)
At IGP, we focus on safety, durability, and practicality in every installation. Small details like proper spacing in protection components ensure a reliable and long-lasting EV charging system for our customers.
Let our obsession for quality take care of your safety.
References:
• IEC 61439-1: Low-voltage switchgear and controlgear assemblies
• Schneider Electric: Residual Current Devices – Understanding the Basics
• NFPA 70B: Recommended Practice for Electrical Equipment Maintenance
• ABB Electrical Installation Guide
