Aircon really need 3phase for safety meh? 1 hp only

Usually how much to upgrade to 3 phases?

Yes you can but you need to apply to TNB and the waiting list is quite long now

Used to be in 3 days to complete but now should be a month at least

If single aircon per hse it is fine anything with more than 3 air cons and a fridge running overnight recommended to switch to 3phase

This problem is UK using 3 pin and Aus also people there use granny charger but I never hear of cases of fuse overload or tripping. Houses there also majority on single phase only.

Why malaysia banyak these cases

This post has been edited by Boy96: Nov 29 2025, 07:52 PM

didnt know that tnb 1 phase supply is only 5kwh, thought it was capable like 12-13kwh or so.

Here many homeowners after power usage assessment, if their usages are almost to the limit, companies will propose to downgrade their chargers or ask the homeowners to upgrade their homes to three phase systems. Many homeowners dont want to change to three phase and downgrade their chargers, pushing the ev charger companies to install anyways eventho it’s near the current limit.

I’d say it’s the mentality of these pipu

Depends on your home and area

Many contractors can give you quotes. But prepare to fork out at least 3-5k.

Diu. Just an advertisement to promote own charger

soyaconcau: fakenews

Betul.

There are two types of charging : DC and AC charging which depend on the vehicle itself.

Example:
EMAS 7 has integrated AC charging at 11kW. (11000w/240v = 45Amp)
EMAS 5 has limited integrated AC charging at 6.6kW (6600/240 = 27.5Amp)

However, both EMAS have integrated DC charging >50kW.
To do so, one would have to perform three phases AC to DC conversion if one want to charge faster than those cars integrated AC charging circuit

Hereby lies the issue......copper conductors size must be sized to the expected amperage
https://www.elandcables.com/media/vyrp3kxq/...1a-and-4d1b.pdf

To make it short, if you live at terraced houses and sharing those thick ulitity wires..........your neighbour house might get on fire instead of yours when you are charging at full power.....due to wiring/resistance issue.

This post has been edited by JohnLai: Nov 29 2025, 09:14 PM

Means safe. Burn 13a fuse. Normal user, just bath cold water. Save energy.


Just lulz.... No serious ok.

single phase normally come with 63amp fuse, during the assessment contractor ask me to on all bedroom aircond, two 1.5hp aircond and two 1hp aircond, it is drawing about 40amp of current, if single phase sure easily hit limit and affect the whole row neighborhood of electricity

Wanna just drive a car oso susah.... EVs.... Lol

This post has been edited by xeNOS: Nov 29 2025, 09:19 PM

3 phase have to pay more. They do not like the extra monies ponied up front. Whats more every month bill also more.

1 phase landed house also not ideal for EV

Upgrade 3 phase, need to fork out moneh

And that the "funny" and dangerous part;

Example, you live at the end of a terraced housing......then you pull a lot of power from the common wires. Now, unluckily enough, your neighbour at the middle of the terraced housing has wiring resistance issue and caught fire instead.....and your neighour like, WTF and how the wire overheat and caught fire?


Then again, majority of AC charger box is practically just a relay controlled switch.

DC charger is different since it perform 3 phases AC to DC conversion and tends to be more expensive and heavier.

Ada one special DB box for EV charger and Isolator switch, if u engage proper electrician sure pakai 6mm above wire.

Deswai padan mukak if anything happens

Who in their right mind if buying proton emas 5 at RM57k gonna spend the Rm5-10k to upgrade to 3 phase.

Just install evse and cap to 16a max.


But bifoti mindset never learn. They gonna max out their chargers and then curi curi upgrade fuse and create more issues.

another problem is B40s will try save out cost of installation, then hire unethical installer to take current directly from meter box without going through DB.