QUOTE(ItsJustheOne @ Feb 22 2025, 01:23 PM)
Any good info/video here on lowyat or Youtube etc. regarding all this electrical terms for landed houses in Malaysia? Still learning all these electrical terms, plus a lot of videos on youtube not really applicable for malaysia homes.
And then 3 phase something like better to put one DB downstairs and one DB upstairs? Not sure if i'm even using the correct terms or understanding, just happen to read a bit last time
Upgrading to 3 phase need about 6k to 15k, subjected to your main switch box location, and if you need to install ev charger, the location of ev charger also affecting the cost.
I think most of the house will just get one EV, but if you plan to have 2 or 3 EV cars, then better to upgrade to 3 phase.
As i consult my electrician, he said if double storey landed, so more my air cond just one 2 hp, one 1.5hp and two 1hp, no need to upgrade to 3 phase, unless go for solar panel, the might need 3 phase if you want to generate more power.
Normal EV single phase charger can go up to either 4 or 7kw, most of the EV battery around 60 to 80 kw, and EV battery is commend not to charge over than 80% to have longer shelf life, so basically single phase EV charger is sufficient for one EV car only with overnight charging.
Single phase if your maximum usage is less than 10kw, then upgrade to 3 phase is optional.
2hp aircond comsuption is 1.6 kw
1.5hp aircond comsuption is 1.1kw
1hp aircond comsuption is 0.9kw
Dual zone induction cooker (max power) about 4.5kw
Instant water heater about 1.1kw
If you on all aircond, all shower and cook with maximum power together, then you need to upgrade to 3 phase, if including Ev charging at the same times, then go for 3 phase for sure.
Anyhow, it is subjected to your budget and your practice. All electric appliance comsuption is based on theory, in real run it will be smaller unless all the appliance running in maximum power.
You can ask electric come your current house to check, they will ask.you to on all appliances, and check the power consupmtion. Tnb advise is single phase 10kw (50a) but actually they can supply up to 12kw (60a), but play safe must keep it below 10kw.
From there, you can roughly know the power consumption of your house, and have idea to plan with your new house.
If Semi D or 3 storey landed , then better go for 3 phase, i assume the bigger house need more unit and powerful air cond . 2hp might too small for you already.