Guys, am I correct to assume a house with 4x 1.5hp & 1x 2.0hp cassette aircond, Medium sized fridge, 16kg washing machine, 2 water heaters, 24/7 NAS, 24/7 CCTV DVR, 24/7 PC running would benefit more from 2 phase than a regular 1 phase circuitry?

Any disadvantages other than can't really using powerline plug between phases?

Looking for some advise. My house is already connected to 3 phase.
Red phase connected to downstairs with two 1.5HP aircon, one 2 HP aircon and one water heater.
Yellow phase connected to upstairs with also two 1.5HP aircon and two 2 HP aircon and two smaller fridge.
Blue Phase connected to the kitchen with one fridge, one 2.5 HP aircon and one water heater.

At night everyone is upstairs, so yellow phase will be heavily loaded. Is it recommended to distribute the upstairs power to other phases.
It will be a major re-wiring to bring the other two phases to the upstairs distribution box.

Thanks in advance.

Well, I do understand this from the beginning. Only sinkalan like you refuse to accept your mistake. Even when I applied for electricity supply, the old version form stated > 2 air cond already need 3 phase.
No doubt applying 3 phase need to pay more, but they will reduce the deposit by "paying" your monthly bills when your monthly usage are lesser.

Well, TNB's statement indeed are too general and I would say it is quite misleading in some sense.
Anyway, just put a probe on a plug point, it is showing 250V.

It is depending greatly on the wireman you hired. Some will do a proper job while some will not.
Rightfully each phase should be serving equal load, like each phase serves 2 air conds if you have a total of 6 air conds. You won't be getting a true balanced load if each phase serves a particular section, like 1 phase just to serve 1st floor, 1 for kitchen and another for living. In this case, you will end up with 1 phase running on higher load which defeat your goal.

Nope, not that right. If at the end of day only 1 phase out of 3 that running higher load, it don't serve any purpose of load balancing.
Using 3 phase in residential are overkill in some sense but if it is already in 3 phase, is still good to balance the load, this is more to keep the wire cool.
Remember, heat generated = higher resistance.

thanks bro for your update. anyway yesterday night do testing, open 3 heater and open 3 aircon (total 3.5HP)  on the same time. after 10-15 minutes, cutout fuse (next to Tenage Meter) blow. my whole house no electricity. no choice, ask that electrician to come to do troubleshooting. just found out that my cutout fuse only 30A, no wonder blow. So ask him to change the cutout fuse to 100A. On the same time, requested him to change the 40A RCD (maxguard) to 100A and the 60A DP Isolator (maxguard) to 100A as well. And also ask him to change one of the MCB (20A) to 40A (because one of my room aircon power use water heater point to do looping, worry if open aircon/water heater on the same time, will overload, so as precaution ask him to change to 40A). All together quote me RM400, no choice, need to take it coz already ask him to settle my cutout fuse blow.

After consult with all sifu here,decided to change cutout fuse to 63A, RCD change to 63A to match My current DP insulator 63A, MCB decided not to upgrade to bigger amp,decided to rewiring my aircon point to nearest power socket (looping) instead of sharing with current water heater point. Thanks for all the sifu advise here,appreciated.

Hehe,  like my house after renovating,  the most things I have is independent socket.  All with individual mcb, and independent db box breaker for ground and first floor.

Hello, my house have 6 AC (1 x 1.5hp, 3 x 1hp, 2 x 2hp) and 4 water heater with pump. Normally it is max to 4 AC open in sleep time. Am I need to change from single phase to 3 phases?

My house garden lighting all burn off. Very frequent happen after install new bulbs. Interested to do for me?
Or do you do solar power lighting?

hi all .. just a small question since i have searched whole jalan pasar n couldnt find what im looking for ..
is there by any chance a white cable instead of the usual grey
[attachmentid=8621833] example of the white cable

and if its only grey available in malaysia .. how do i pick the good quality ones

even if you swith on all those 6 ACs and all 4 water heater at the same time, total amp still below 70 Amp. single phase can carry up to max 100A.

my tnb cable rated 100 Amp

I was told by an electrician that if upgraded to 3-phase meter and under-utilising it, tnb will also charge extra... and I was advised by 2 separate electricians against upgrading the tnb meter unless i see the need...

Any truth to that...?

My apartment 3 phase. Last month Red wire burnt cos too high consumption

My wireman told me the wire at the fuse there not properly tighten. Suspect spark from there

He also say 4 AC & heater are all connected to that Red wire. Now redistribute properly to Yellow & Blue

Loose connections mean high resistance, causing voltage drop, increase current drawn on appliance, this in turn increase heat build up on the loose connections (i²r)

So bro roughly 15kw max PER phase?

And if unbalance current phasing example
Red 2kw
Blue 3kw
Yellow 14kw

Then will trigger TNB come to check?

Cause I’m running mining rig at 1 room.

I’m willing to pay for TNB but I not willing to trigger them (especially local council / any thieves)

My total rig at that room would be around 60A now.