What do you mean by kalimantang light?

Can't see your photo.

Think what you mean is T8 Fluorescent light. The thinner version is T5

Get brand like GE, Philips, Osram and some good brand. Don't get the china unknown brand. Last i ask 4' is about RM 25, but this is after i brought nearly 1.4k of switches from them. Normal i think is around 28+- for 4' 28watt. The HO type is more expensive but not many people selling.

I went to Jalan pasar. There got few shop.

Yes, they do.

Some shop sell or double price will be the same. I'll get all double, and pull out one each per downlight if it too bright. But than again, i am a person light bright place, maybe i won't do it.

It maybe other appliances e.g. Fridge, A/C, and your deco light maybe using halogen which are very energy hunger.

You can do the math, how long you run and add it up.

Say for your 17 4 feet T5, you use 17 x 28watt = 476 Watt per hours + 15% losses (assume) ~ 550 Watt / hours. If you switch on for 24 hours is 550 x 24 = 13Kwatt

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Added on December 27, 2011, 10:04 am8 x 15 Watt LED = 120 Watt + 15% losses ~ 140 Watt, x 24 hours = 3.3Kwatt

This post has been edited by weikee: Dec 27 2011, 10:04 AM

On my previous post, i mention my daily usage of electricity is about 10Kwatt (exclude A/C)

I still don't know how the Gov subsidy people use less than <= RM 20.

Crazy, all the tax we pay, all the loan we give to TNB we should be getting FOC.

TNB is used to be government, and now go private all RED, used up so much our tax money. Just like MAS, they use lots of EPF money we should be getting free MAS ticket!!!

They have problem with managing the money, and want to charge the citizen. Why IPP get to charge TNB so high?

Most efficient CFL is T5, 4ft use 28 Watt, adding losses maybe 35 Watt. You can only power one T5 4ft CFL

But you don't need to switch on light during day time, so you use your Solar to charge storage battery and use it for night time.

What is the faulty parts? Driver or LED?

Your FS light no more Feng Shui already. Usually is the driver, if is not the driver than your LED light are not meant to switch on 24/7 maybe due to poor heat insulation.

You need to check if its really driver, or the LED itself.

For driver, I don't use LED for long period of time so no comment on 24x7 driver. I only use PC PSU to power up the LED, and other 12v / 5v light I need for testing only.

You need to go back the shop, ask them recommend you a better and reliable driver.

I doubt lah. I never know FS got play with light. Maybe his school is difference. I only know it got to do with Chi flow, main door, stove, bed and timing.

Real "Yang" come from sun light, not from electrical bulb / led.

Alternative, get a PC PSU, "kung fu" and use that as a driver. But need to hide the big PSU box.

Laptop charger usually >15v some can be 23v too

Lifespan on LED specification is on LAB and test environment. In real life is much shorter.

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Added on February 17, 2012, 9:53 amLED generate very little heat, but is just on the source. Need to consider the Driver, try touch the driver and feel the heat.

LED can blind you, is more glaring than CFL.

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Added on February 17, 2012, 9:56 amI will use LED for specific application, but not going to replace entire house lighting. It still won't replace all the CFL application. Downlight LED still long way to go, and the brightness produce are not matchable to CFL. If we compare same brightness of LED and CFL, we have to pay a lot more.

This post has been edited by weikee: Feb 17 2012, 09:56 AM

I think some manufacture able to make the LED not too focus, Maybe by putting the frosted glass casing.