The wallbox is the same on every wall — what changes is the conversation with your installer. Solid brick and cast concrete give a wall-mounted charger a structural surface to fix into. Cladding over insulation does not: the visible skin is not the structure, so the fixing has to reach what stands behind it. For the EV-ACT3204PE, a hardwired 22 kW wallbox, the installer assesses the wall and does the fixing — your decision is which wall, made with their assessment in hand.
Key Takeaways
- The wall decides the conversation: brick and concrete are structure, cladding is a skin over insulation.
- On cladding, the fixing must reach the structure behind the panels, and the cladding warranty is checked first.
- The IP rating covers the charger’s enclosure, not the wall — entries are sealed by the installer.
- If one wall fails the assessment, another wall, an internal wall, or a post mount usually keeps the project moving.
Three Walls, Three Different Conversations
| Wall type | What the installer is looking at | The decision it creates |
|---|---|---|
| Solid brick or block masonry | A structural wall throughout its depth — the question is the condition of the brickwork and mortar at the chosen spot, and whether render or paint hides damage. | Usually the straightforward case: pick the position for cable reach and use, and let the installer confirm the masonry is sound there. |
| Cast or precast concrete | The strongest surface of the three, and the least forgiving: hidden services and reinforcement inside the slab are the installer’s to locate and avoid, and penetrations are permanent. | Position matters more, because moving a fixed charger on concrete later is a bigger job. Agree the exact spot before work starts. |
| Cladding over insulation | A weather-shedding skin over insulation and a cavity — none of which is structure. The load has to land on the wall behind, and every penetration crosses the weather layer. | The caution case: the installer plans how the fixing reaches the structure and how the skin is sealed, and the cladding maker’s warranty is checked before anyone drills into it. |
Mounting height is a separate decision from wall type — our guide to how high an EV charger should be mounted covers it. This article is about what the charger is fixed to, which is settled first.
The Sealing Question on Every Outdoor Wall
The EV-ACT3204E’s housing is rated IP65/IP66, which describes the enclosure itself — not the holes made in your wall. Cable entries and fixing points are sealed by the installer as part of the job, and on an exposed wall that sealing is what keeps driven rain out of the wall build-up. On cladding it matters twice over, because the panel system sheds water in a particular way and a careless penetration defeats it. Ask how entries will be sealed on your wall, and get the answer before the work.
If the Wall You Want Will Not Take It
A wall that fails the assessment is not the end of the project. The installer’s usual alternatives, all at decision level:
- Another wall. A side wall or garage wall in solid masonry may serve the same parking space with a longer cable run.
- An internal wall. A garage installation keeps the unit indoors, with the car charged inside or the cable run to the door.
- A ground-mounted post. Where no wall is suitable, a pedestal puts the charger by the bay instead — a common answer in open car parks.
Each moves the cable route and the cost, which is why the wall conversation belongs at the survey stage, before the installation date is booked.
The Unit Being Fixed
The EV-ACT3204PE is a 22 kW wallbox for three-phase supplies (32 A, 380–400 V), hardwired, with a tethered Type 2 cable, RFID and app control, an IP66 housing, and a CE mark. Because it is hardwired, the mounting and the electrical installation are one job done by the same licensed installer — which is exactly why the wall type is discussed with them, and not decided from the product page.
Frequently Asked Questions
Can a wallbox be mounted on any exterior wall?
Not on the visible surface alone. Solid brick and concrete are structural; cladding is a skin over insulation, so the fixing must reach the structure behind it. Your installer assesses the specific wall and confirms whether it can take the unit as planned.
Does the IP65/IP66 rating mean wall sealing does not matter?
No. The rating covers the charger’s enclosure. The cable entries and fixing points in the wall are sealed by the installer, and on cladding that sealing also protects the panel system’s own weatherproofing.
Who decides the final mounting position?
You and the installer together: you know how the space is used, they know what the wall can take. Agree the position at the survey stage — on concrete especially, it is hard to change later.
Related Reading
- How High Should an EV Charger Be Mounted?
- Apartment and Condo EV Charging: Solutions for Shared Parking
- Commercial EV Charging Solutions
