Distribution Box and Charging Pile Size Specification Table

The size of a charging pile distribution box depends on the number of charging interfaces, power rating, installation environment, and whether it is for AC or DC charging, with modular options available to match different scenarios. Key Considerations for Sizing1. Charging Pile Type and PowerAC charging piles (slow charging) typically require smaller distribution boxes due to lower power and simpler system structure, suitable for residential or underground garages.

D

C charging piles (fast charging) demand larger boxes to accommodate higher power, wider voltage ranges, and additional components like rectifiers and protection devices. 2.

Number of Charging Interfaces

One pile with multiple interfaces requires a larger distribution box to house separate circuits, breakers, and wiring channels. For multiple single-interface piles, several smaller boxes can be distributed near each pile for convenience and safety. 3.

Installation Environment

Outdoor boxes must be rainproof, dustproof, and heat-dissipating, often available in multiple sizes (e.g., 16 different sizes for flexible matching) to suit various power configurations. Indoor boxes can be more compact but still need proper ventilation and space for wiring and maintenance. 4.

Modular Design and Customization

Modern distribution boxes use modular partitions to separate wiring paths and reserve space for components, ensuring safe operation and easy maintenance. Customization allows adjustment of box volume, internal layout, and component positions according to the specific charging pile power and site requirements. 5.

Safety and Protection

Include low-voltage circuit breakers, residual current protection, and overcurrent protection to prevent fire hazards and ensure stable operation. Maintain sufficient spacing for heat dissipation and ventilation, typically leaving at least 1 meter in front and behind the box.

Practical Guidelines

For residential or small-scale AC charging, a compact indoor distribution box is sufficient. For commercial or fast DC charging stations, a larger, modular, outdoor-rated box is recommended, with pre-planned space for high-voltage components, harmonic filters, and intelligent monitoring systems. The exact size should be determined based on total power load, number of piles, and site layout, with flexibility for future expansion.

By considering these factors, the distribution box can be sized to ensure safe, efficient, and reliable operation of the charging station while accommodating maintenance and potential upgrades.