An IP65 enclosure is a protective housing rated IP65 under the Ingress Protection (IP) code, meaning it provides strong protection against dust ingress and water jets. In EV charging, an IP65 enclosure is commonly used for outdoor chargers and electrical cabinets to improve reliability in rain, splash, and dusty environments.
What Is an IP65 Enclosure?
IP ratings use two digits:
– The first digit (6) indicates protection against solid particles (dust)
– The second digit (5) indicates protection against water jets from a nozzle
In practical terms, an IP65 enclosure is designed to keep internal electronics protected in typical outdoor exposure such as rain, spray, and wind-driven dust.
Why IP65 Matters for EV Charging
EV chargers operate in demanding environments—public car parks, curbside locations, depots, and open lots—where moisture and dust can cause failures. An IP65 enclosure helps:
– Reduce risk of water ingress that can trigger ground fault detection and shutdowns
– Protect sensitive components (power supply, controller, metering, communications)
– Improve long-term reliability and reduce service callouts
– Support higher uptime expectations for public and commercial sites
– Withstand seasonal conditions like snow melt, splash, and airborne dirt
Where IP65 Enclosures Are Commonly Used
IP65 is often specified for:
– Outdoor AC EV chargers and wallboxes
– Ground-mounted charger housings and pedestals
– Electrical distribution cabinets feeding charging circuits
– Site communication boxes and gateways near chargers
– Enclosures in industrial yards with dust exposure
For harsh “wash-down” environments (e.g., frequent pressure washing), higher water protection levels may be preferred depending on the installation.
IP65 vs IP54 and IP67
A quick comparison commonly seen in charging projects:
– IP54: basic splash protection, often suitable for sheltered locations
– IP65: stronger outdoor protection against dust and water jets
– IP67: designed for temporary immersion (often seen for connectors/components rather than full cabinets)
Selecting the right IP level depends on real exposure, mounting height, drainage, and cleaning practices.
Installation Factors That Affect Real-World Performance
Even if a charger is rated IP65, actual protection depends heavily on installation quality:
– Correct cable glands and sealing of conduit entries
– Proper torque on covers and gaskets (no trapped debris)
– Sealed base penetrations for ground mounting
– Drainage planning to avoid standing water at the pedestal base
– Avoiding damage to gaskets during service and maintenance
Many water-ingress issues come from cable entry points and base zones rather than the main enclosure body.
Benefits and Limitations
Key benefits:
– Better outdoor durability and reduced moisture-related faults
– Improved protection against dust contamination and corrosion risks
– Lower O&M burden and fewer nuisance trips caused by ingress
Limitations to consider:
– IP65 does not mean “submersible” (flooding can still cause failures)
– Mechanical damage or poor mounting can compromise sealing
– IP rating does not cover impact resistance—use IK ratings (e.g., IK10) for vandal/impact protection
Related Glossary Terms
Ingress Protection (IP Rating)
Ingress Protection Zones
Water Ingress
Ground Mounting
Cable Gland
Weatherproof Enclosure
IK Rating
IK10 Impact Protection
Ground Fault Detection
Uptime