I know brand like ABB, Hager have difference made, price is also varied. So when buy ask where it was made.

Thought you move in already? If your house still running on single now, that mean you need to re tap the mini bus bar again in your DB box, I believe now is ask tap to single phase.
If you not sure how to do better ask an electrician to do it.

Just change DB box and apply 3 phases? No point if you did not add more points or use high current device.

What you add? If goose was early design for single phase, doing 3 phase required neatly rewrite half the house. If rewrite half the house this is too cheap to believe.

Truly understand, now I cut my budget cannot go holiday this year. Still got some more improvement to do.

Try call your contractor with another number.

Depend your Ac power. If 3 units of 2hp default is on the limit for single phase.

This post has been edited by weikee: Jul 13 2012, 03:57 PM

1 HP say 4 amps each, 2HP say 8 amps, heater say 15 amps each, fridge say 2 amps but only run short hours per day. Oven I can't recall think is about 10 amps.

So in total if you switches on concurrent is about 56 amps. Lights and TV maybe 3 amps. You are about there of single phases if you switch all the same time.

That is why know your house usage, max concurrent drawn will be best. Not always renovation must change to 3 phase.

Why need 3p? running concurrent 3 water heater + 3 a/c + fridge? or have 300 units of lights lighting everyday?

Maybe many people monthly bill are above 500

Modern circuit have made some improvement and some even put in current limiter this reducing the rushin current for startup motor. Even if it go up 6x, is only few seconds.

Wonder how can the house owner switch on the same time? Even after power trip, the A/C auto on is also random timed, that was one of the reason the random switch on time was design.

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Added on November 19, 2012, 1:47 pmAh well, maybe we have many well to do home owner, target to have lots of high HP a/c switch on, and few hundreds lights switch on daily. Ok to pay for TNB.

Maybe I should buy TNB share already

This post has been edited by weikee: Nov 19 2012, 01:47 PM

Someone told me the actual rate will be about RM 0.5 per kw, could be higher. All thanks to the IPP "special lock price" to TNB, and over supply. Ah well is only speculation.

But do expect to go up North after 13GE.

When testing my house wiring, i switch on all my 6 units of a/c + 2 water heater, My ELCB did not trip, only my main fused beside the meter blow after about 10mins of used. That is because the fused was rated 40+ amps (think it come from 3 phases) free from my electrician. Change it back to 60Amps, that should allow me to handle up to 14,440 watt. More than my 6 a/c + 2 heater.

Is not sound, is actually not worth it if your appliance are not power hunger.

This post has been edited by weikee: Nov 19 2012, 09:26 PM

If consistan using 14,400 or maybe at 90% 13,000 watt than is good to change to 3 phase, but only just short spike don't need.

BTW, if using 14,400 watt, that is paying RM 5+ per hours, if use for 3 hours perday that is paying RM 450.00 for just this 3 hours x 30 days. Add with other daily usage, minimal house hold electrical bills will go up to RM 500++

This post has been edited by weikee: Nov 22 2012, 02:27 PM

Monthly bill rate is not a good way for 3 phase decision. Need to know the house peak load.

If one stay in bungalow, sure the normal peak load will sometime exceed 14.4kw

For my humble double story house, during party, i switch on most of the lights, and 3 units of a/c without switching on the water heater. Still fine, that nigh itself only use about 8kwh for 2.5 hours.

Most important, as house owner, know how much your utilities bill and where and why the amount coming from. Be wise.

ELCB is Earth Leakage Circuit Breaker

Yes, and earlier is my typo error, is the main CB (c63) in the DB box that did not trip.

Actually if i run 40amp on my first floor, and 40 amps at my ground floor. It won't trip. Because I run two separate DB box, with independent ELCB and main MCB. Only the incoming fused will blow.

Technically, i can just pull one more phase for my first floor. Too bad, TNB don't offer 2 phase circuit