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露天車位・加裝防水保護箱Open bay, charger in a weatherproof box
車位完全露天，全日曬正西太陽，夏天機身滾燙。加一個防水保護箱，同時解決日曬、暴雨同鄰居借電三件事。A completely open bay facing the afternoon sun — by summer the body was too hot to touch. One weatherproof box solved the sun, the rainstorms and the neighbour borrowing power.
西貢・村屋露天車位Sai Kung · Open bay, village houseWall Case 37kWIP65 + 保護箱IP65 + enclosure
A village house in Sai Kung with the bay at the side of the building and nothing over it — no canopy, no shade, facing due west. From three in the afternoon the sun is straight on the charger's face.
The unit itself is IP65, so water and dust were never the issue. The issues were heat and other people.
The hard part
One: summer throttling.
The charger has thermal protection — when the body gets too hot it drops its output current to protect itself. That's the right behaviour, but on a west-facing open bay, a charge started on a summer afternoon could fall from 32A to the low twenties. To the owner that reads as "it's getting slower", and it feels like a fault. It isn't. It's just hot.
Two: the neighbours.
A village-house bay has no gate. Anyone can walk up to it, and the owner had already found someone plugged into his unit.
What we did
1. First, check the box wouldn't make it worse
This matters: a sealed metal box around a charger, with no thought given to airflow, just makes it hotter. The enclosure we use has vents down the side and an air gap between the box and the charger body. It's made for chargers, not a generic meter cabinet.
2. Mount, wire, then box
The charger goes on the wall and gets fully connected and tested first; the enclosure goes on afterwards. That order can't be reversed — the testing has to happen with the unit exposed.
3. Combination lock
The door takes a combination the owner sets. The cable lives inside and gets locked away when it's not in use.
The result
Steady 32A through a summer afternoon, no more throttling.
Nothing hits the face of the unit directly any more, and the temperature inside the box sits well below what the bare casing used to reach. Nobody else has borrowed a charge since.
Who this case is for
If your bay is fully open with no canopy, or it sits somewhere the public can walk up to, an enclosure is worth costing in.
If the bay is in an indoor carpark or under cover, it isn't — IP65 on its own is already enough. Send a photo of the bay and we'll tell you straight which one you are.
你的物業與這個案例相似？Does your place look like this one?
傳送車位及電錶相片，我們會告知最接近哪一種情況、需時多久及費用多少。Send photos of your bay and meter. We'll tell you which case yours resembles, how long, and how much.
