QUOTE(r3apers @ Dec 27 2013, 12:30 PM)
in and out also been burn b4...

If in before meter burn means there might be a input surge from TNB substation...this happens....sometimes there's drop also...happen at my factory before input power was lower on all 3 phase 380V only...causing my machine to have problems especially the motors...
QUOTE(+Newbie+ @ Dec 27 2013, 12:31 PM)
ooo ... icic, for AC applications, they are used to enhance power efficiency as well. Wow, didn't know TnB charges like that. lol.
Damn. I'm thinking of adding air cond unit to my house living room before CNY. That takes the total to 4 units. I don't wanna end up like you.

How do I check if I have single or triple, or do all houses have single phase?

The higher the factor, the more efficient you are.
All household or housing comes with single phase only. Only commercial or factory have 3 phase 415V power supply but for houses to have 415V need to apply with TNB 1st then they will arrange to do installation but need to pay money one...
If you have many AC units try to have them on a different individual CB. 1 AC to 1 CB so that each AC have their own supply. If you use Ac for long period of time best to get those with inverter so that when the compressor kicks in the surge won't be so strong.....with inverter the compressor start up gradually until it reaches it's full power less surge, less sudden draw of power ...unlike conventional when the compressor kicks in the surge is sudden. Actually why our electricity is expensive with AC is because of the surge that AC, fridge, water heater produce.....
Example of AC with inverter and W/O
Full power is 10
Inverter type AC compressor kick in
1-2-3-4-5-6-7-8-9-10
conventional AC compressor kick in
1---10
If those not having inverter AC (since with inverter they are quite expensive) best is to use ECO mode if your AC have it this makes the AC maintain its temp and don't keep changing the temp as this will make the compressor kick in and out, in and out....not good for electricity bill.