your house got 3phase?
if got then can install higher power changer, charges a lot faster too

if takde then bobian stick to single phase changer very slow

I use their service quite ok. But my car comes with wallbox already so only pay installation cost

Bro don’t mind me asking but your house single or 3 phase? So many houses single phase only but I think 22kW requires 3 phase

I think it depends on your peak usage ampere. Single phase should be using 40A circuit breaker from what I observed.

22kw in single phase is more than 110A, only 3 phase 40A circuit breaker can support 22kw.
Anyways regardless of 7kw or 22kw, the moment you install EV charger I think it's best to consider upgrading to 3 phase for the supply.
7kw in single phase is already more than 35A, that's leaves a measly 25A for your house A/C, water heater, fridge, etc. Which is definitely not enough for a landed house.

You are absolutely right. 22000kW/230V is almost 100A dy.

My house single phase but the free wallbox given to me is the 22kw 3 phase one. But it is backwards compatible for single phase installation

No you have to upgrade to 3 phase supply.
A very simplified example to help you understand is that 3 phase has 4 cables connection(plus 1 for earth). Single phase only has 2 cables connection(plus 1 for earth).
So a single phase cannot supply a 3 phase equipment. Of course there are other technical reasons, but I think the above example should be sufficient enough.

Ive been using the wallbox for months already and no issue. The wallbox that i installed memang can be configured for single or 3 phase supply

Correct, but boy96 is using it as a Single Phase box, hence he mentioned backward compatible.

hmmm more and more I think about it, if we go to words EV with fast charging 22kw, better to have solar with battery installed, so that we can tap into it, else, with 3-4 cars at home, the electricity bill will be significant?!

This post has been edited by VeeJay: Jul 9 2023, 12:27 PM

From meter? Our contractor says from DB inside the house.

And yes they suggest need drill through the wall direct go out porch, or else need put boxing on the plaster ceiling inside the house.

I arranged wallbox for my workplace , bmw ix.
Need 3 phase wiring for faster speed, 16A.
Kineta charger few post above is good. But max input charging for Mesia bmw (full EV) s 11kW only.

To be more detailed, if your wallbox is already stated as single or 3 phase, then it can take either.
But your previous post said that your wallbox was 3 phase, that's why I said that it cannot use single phase supply.
It's like electrical equipment, if it says it can take 115-240V, that means it can take US (115) and UK (230) supply.
But if it only takes 115V or only 240V, when you connect it to the wrong voltage, get ready for some fireworks.

P/S : If you really want the details on why 3 phase equipment shouldn't take single phase supply. This is 3 phase is basically 3 sets of single phase supply, but with different phases (120 degrees shift). Alot of 3 phase equipment (such as motors) use this in their design where the phase difference gives the motor a smooth rotation. This is also the same for electrical equipment, when they convert 3 phase AC into DC. Due to the shift in phases it is possible to provide a relatively smooth DC waveform by having a rectifier on all 3 phases. Using a single phase will only result in a half sine wave.

Taking from the DB is the correct way.
Splicing from the meter is not safe and is not compliant with ST requirements.
It is also a fire hazard.
Unless instead of splicing they introduce a new DB (with the required MCB/RCCB) after the meter to split the supply to the old DB and the EV charger.

You need 3Phase for 22k, so stick with 7kwh.

I am not in Malaysia currently but I got a Zappi which was around RM5.5k including install.

At 7kwh, it charges my ID.4 77kwh from 20% to 80% around 6h or so.
I rarely need to charge from 20% though, I keep it plugged in daily as I come home so it keeps the charge topped up overnight.

You cant run an EV like an ICE car, treat it more like your phone, plug in when you can, at the mall, office, home and keep it topped up. Its just parked anyway

This post has been edited by HarvinDhillon: Jul 10 2023, 11:21 PM

Upgrade siap2 3phase before you get your car. Process takes some time around 3-4 weeks for tnb application.

Currently, my ix3 is the only car. No problem travelling outstation.

Charging with 22kw wallbox, setup from DB box to car porch. Usually charged at night, around 3am - 6am, charged until 80% only for daily usage and 100% for outstation.

This post has been edited by Sizty: Jul 11 2023, 04:04 AM

Hi, can anyone share your wallbox installers contact (in klang valley) ? Tks.

for condo, let's say if management allow to install own charger at parking lot, how's the process actually? how do they link the charger to my own tnb meter?

I've had an EV for a while, and I definitely recommend installing a high-power charger at home. It makes a huge difference in charging times. The cost can vary depending on your home's electrical setup, but expect to pay between $500 to $1,500 for installation. You'll need an electrician to install a dedicated 240V outlet or a wall-mounted charger, which is more efficient than using a standard plug.

Last year, I had some electrical issues at home and needed professional help for my EV charging setup. A friend of mine suggested a company with electricians available 24/7, which was super helpful. To find out more information here about EV installers , check them out. Having a reliable charger at home is a game-changer!

This post has been edited by mahzuz85: May 27 2024, 07:50 PM

Why your post sound like AI answer?