Malaysians so kiasu, a lot of ppl whom want 3 phase have not a single clue what it is, but they want it because more is better.

I've even seen ppl with 3 phase incoming but the house wiring still wired to 1 phase, but they think it is better and 'save' more!

Think about 3 phase as three different single phase coming into your house.
In house setting you will only use individual phase to neutral, you won't be using phase to phase because it gives 1.732 x voltage = 415V. Only in industry setting especially electric motors needs 3 phase voltage or cannot run.

Generally for bungalows 3 phase is good to have. For condos and terrace houses I doubt you will ever need 3 phase.

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Added on March 13, 2012, 2:10 pmIf nothing wrong with your wiring if over current happens the MCB will trip nothing will burn.
Only if got problem with wiring where a short/current leak does not trip your MCB/ELCB there will be a possibility of fire, in that case even if you have 3 phase still can get fire.

And even with 3 phase a irresponsible electrical contractor can be lazy and overload 1 of the 3 phases, in that case that would be risks involved as well.

This post has been edited by northface: Mar 13 2012, 02:10 PM