right .. my advice change both , surely it will cost a bit , but in the end .. peace of mind

1 aircond draw 3.91 Amp, and we know 2.5mm cable can safely carry current up to 15Amp, so can i install 2 aircond using same cable?

Whats the length of the standard warranty period nowadays?

And how do the different brands compare in functionality/reliability for inverter models?

Not recommended.. At least By Suruhanjaya Tenaga regulations a motor is independently on its own circuit breaker ..

Refer Electrical Accessories Chapt 6.1.ix electric motors shall be connected permanently to a 20A/30A rated circuit breaker/fuse together with an isolator, motor starter and 15A socket outlet. The motor outlet shall be Direct-On-Line type with the appliance together with the contactor, overload relay and on-off control. The circuit breaker/fuse which controls the motor circuit shall be capable of withstanding the starting current of the motor..

Don't try to save monies and you may regret if house caught fire. How did you come up with 3.91amps? Can you guarantee voltage will be stable? If voltage drop current will increase. Same as Power Factor and also Motor startup current all this have tendency to spike up the current.

Of course there people doing it and recommend by some under the tree electrician. If anything happen bomba found out your insurance will not pay anything.

ok, will do just for the knowledge purposes. anyhow, where can i obtain those regulations?


thank you for the explanation though.

Amp rating is from manufacturer specification. (rfefer image)

well, apparently 2 out of 3 electrician that came to my house for the price quote, they insisted that 2.5mm cable is more than capable of carrying two 1HP aircond, as 2.5mm rated amp is 15-20A.



This post has been edited by heloooo: May 21 2017, 01:37 AM

There u go...

http://www.st.gov.my/index.php/en/download...ntial-buildings

Hi,

do you have any sample bill usage calculation for inverter vs normal aircond? i.e normal usage 9pm to 6am daily. how much we can save using inverter?

I remember working it out but that was too long ago and I'm too lazy to look it up so you'll have to do it yourself..

Look for the Malaysian Energy Star ratings .. Goggle it up .. either web sites, shops where the tags are hung

Look for the Annual average energy usage for an inverter and a non-inverter of an electrical appliance of your choice..

The difference is the savings and ROI..

Have fun..

Edit* The electrician is either not properly trained or not telling you the whole truth..

All breakers are rated to the maximum demand current which is the starting current.. not the running current..

Sooner or later that breaker will fail, will not trip, start a short circuit melting that wire and burn ..

It's easier to comply to the ST's recommendations..

This post has been edited by Richard: May 21 2017, 02:56 AM

thank you for your reply.

currently my panasonic inverter 1HP died already. my room size around 16ft x 10ft. previously i set my aircond temp not more than 24degree, sometimes below 21 to get it cold.
i just wondering is it underpower or my aircond got problem...?
i'm considering to buy new aircond.

1. 1hp non inverter
2. 1.5hp non inverter
3. 1hp inverter
4. change current indoor unit (1hp inverter)

current panasonic inverter 1hp used for 2 years only. now im quit worried to make wrong decision before buy new aircond .

About 40% different from my old bill.

And change from 1hp to 1.5hp.

that's amazing. how much your old bill? how many hours you used aircord daily?

RM100-RM110

Average 8hr.

why not?
simple google search also average lifespan of split wall mount unit can last about 12 years.
My parents house also have unit more 18 years.

i thought he is quite clear that the fan / blower / indoor unit is working fine but just that there is no cooling.
So it is the problem with the outdoor unit / electronic board / controllers, etc. etc.

I only want to mind you, sometimes when contractor isnt good at something but if they need to fix the problem, they will just simply ask u to change the whole thing.
If i were u, i will just try to get more quotation from contractors if possible.
Sometimes some very specific component faults, they might just get back to the supplier. When the supplier give the price, i guess that should be quite final.. not much to bargain anymore.

Hello guys,
Want your opinion on the aircond horsepower that I should use for my master bedroom 144sqft. Room height is 10feet.


Attached thumbnail(s)

http://www.daikin.com.my/heat-calculator/
try that out..
I would recommend 9,500 to 12,500 btu/hr.

Note the disclaimer in the webpage.
Because it is really depends on the usage and heat gain from the room.
for example, what big is the window, window material, any roof heat gain, any insulation installed, how many heat generating equipment in the room, etc. etc.

bought 2 electrolux aircond during their warehouse sales in PJ at Rm700 each (inc GST) before delivery. Hope their AC is good in quality.

This post has been edited by ju146: May 21 2017, 10:07 PM

that's why i highlighted the disclaimer and explained the basis of aircon sizing or design.

6000 btu/hr is quite on the low side but not that i am saying it cant achieve the required cooling.
But i guess there are chances that your AC is unable to cool down on certain hot day time.
Usually night time won't be an issue.

good point, that's where inverter come in.

but still depends on one budget on what to choose.

Hi.. Need some help from all of u guys. I want to buy air cond for my living room size 24x18 feet, facing sunlight and accommodate 5 peoples.

Been quoted hisense 2hp inverter 2.1k with installation. Other japanase or korean brand add rm300-400.

I prefer air cond that has swing function horizontal and vertical and also the best in cooling performance.

So, what is recomended hp or btu for my place and what model might suit my criteria. Tq