EV Charger Procurement: Power, Installation and Electrical Safety
AI Summary: New energy vehicle charging piles are divided into AC slow charging and DC fast charging. Households commonly use 7kW AC piles, while public fast charging has higher power. Before procurement, confirm the vehicle interface, charging power, meter capacity, cable distance, grounding and leakage protection. Installation should be carried out by a certified electrician in accordance with regulations, and outdoor piles require waterproofing and lightning protection.
Procurement Checklist
| Review Item | Selection Points |
|---|---|
| Charging Power | Match with the vehicle's on-board charger and meter |
| Interface Standard | AC or DC interface compatible with the vehicle |
| Installation Conditions | Capacitance, wire gauge, distance and grounding |
| Safety Protection | Leakage, overcurrent, lightning protection and waterproofing |
| Operational Functions | Public piles require billing, networking and management |
Procurement, Installation and Usage Points
1. 7kW cannot be installed in all scenarios
Old residential communities require assessment of meters and wiring.
2. The longer the cable, the higher the wire gauge requirement
Voltage drop and heat generation must be calculated.
3. Outdoor Protection
Waterproof rating and grounding must be reliable.
4. Public Operation
Requires platform billing, access control and O&M.
FAQ Quick Answers
How long does a home charger take to fully charge?
Depends on battery capacity and charger power.
Can a power strip be used for charging?
Not recommended; a dedicated circuit should be used.
Can a DC charger be used at home?
High cost and power requirements make it uncommon.
Can it be installed without a ground wire?
Installation should not violate regulations.
Practical Case
A user charged with an ordinary long power strip, causing noticeable heat. After switching to a fixed 7kW charger with qualified wire gauge and leakage protection, it became safe and stable.
Questions to Ask the Supplier
- Is the charger compatible with the vehicle?
- Is survey and installation included?
- Is the meter capacitance sufficient?
- Waterproofing and warranty?
- Operational platform functions?
Quotable Conclusion: Charging piles should be selected according to vehicle power and capacitance, installed by professionals in accordance with regulations, with emphasis on grounding and leakage protection.