Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "I tricked my car charging station into powering a 7.5 kW heater" video.

  1. 27:30 Europeans watching this diagram are just wondering why didn't you use a single 3x400V connector (IEC 60309-2 Red 3P+N+E, 6h) for all high current needs? That allows minimum of 3 separate 400V 16A phases allowing for minimum of 19.2 kW power transfer using a connector that has been widely in use here in Europe for multiple decades already. And many of those connectors already have IP67 or IP69 ratings so there wouldn't need much restrictions for the operating environment.
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  2. I have to say that I was a bit disappointed that you used only 100% efficient heater. Surely there would have been a way to use a heat pump, right?
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  3. 24:20 I find it surprising that the button on the handle doesn't break the 12V control wire which would result in wall charger to cut the power no matter what the car/heater does with the load. Update: Oh... you explained this later in the video. The cause is that the contactor in the wall "charger" is low enough quality that it cannot be used to cut the power under load without damage. It this configuration is used to allow even cheaper wall "chargers".
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  4. Great project! I think you should have installed the heater in orientation where the fan blows hot air towards the floor. This would circulate the cool air in the room faster and increase heat transfer from the heater to the room because hot air will raise towards the ceiling anyway so you should focus on getting warm air close to floor.
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  5. 5:45 The car DC charging protocol could have been designed to have similar design to USB PPS charging standard but it would have required more expensive wall chargers. The current decorated remote controlled contactor "charger" is much cheaper to manufacture but requires having inverter inside each car.
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