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Posted

Has anyone got, or better still converted their home electric supply from single phase to 3 phase? My electric guy is claiming, since I'm a bit of an air conditioning electric junkie I could reduce my electric bill by 30-40% every month. But of course there is a cost to do it, so want some verification that the claim is true

Posted

Nope.

3 Phase will cost the same as single phase.

It's all about the amount of watts that the ACs are drawing, which dictates how many units you are burning up. Nothing to do with the actual method of supply.

If a AC uses 3KW and you run it for an hour, then you have used 3 KWH (3 kilowatt hours) your meter measures the amount of watts drawn.

I think your electric guy is licking his lips at charging you for a 3 phase system that you don't need. It's not about you saving money, it's about him making money.

Posted

Cost per unit on 3 phase is the same as single phase. Cost for 3 phase meter, wiring and load centers is substantially more than single phase though.

So whoever told you going 3-phase will save money, is lying or stupid.

Posted (edited)

I would not condem the guy prematurely before checking the tariff options.

http://www.mea.or.th/profile/index.php?l=en&tid=3&mid=258&pid=109

(check through the options on the left hand menu)

There is whole lot of options for the high consumers.

You would probably be connected to a high voltage connecting point, invest in your own transformer and get substantially better rates per kWh with higher base cost (service fee).

Just speculating honestly.

How do you communicate wiht the guy? Is he fluent in English or you in Thai to explain the details?

Otherwise some help in translation needed.

What is your (planned) avarage consumption?

Edited by KhunBENQ
Posted

having a 3-phase connection comes in very handy if you have multiple aircons installed and equally distributed. if one or two phases are down you still some cool areas in your home. but that convenience does not save you a single Satang on your electricity bill.

Posted

having a 3-phase connection comes in very handy if you have multiple aircons installed and equally distributed. if one or two phases are down you still some cool areas in your home. but that convenience does not save you a single Satang on your electricity bill.

Or you get some machines that need 3 Phase.

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