Electricity Saving Tips For Homes And Offices

Energy Efficient Lights – use CFLs, T5s and LEDs

By on April 22, 2016

Lighting consumption constitutes about 30% of residential consumption as per a study by Ministry of Environment and Forest in India. Its contribution in your electricity bill may vary from 10-20% depending on your total bill. Although it may not be a major contributor in the electricity bill, the energy efficient options are fairly simpler to implement and provide higher rate of returns.

Latest technical advancements in lighting provide with a lot of options for energy savings today. The energy saving lighting options are a little expensive compared to the old incandescent options and old tubelights, but the payback time for them considering the savings it provides is quite short depending on the usage (mostly less than a year for average usage). Also the life of the new energy saving lighting options are far better than those of the old lights, which makes them much more attractive. There are several lighting options that are available in the market which are discussed below:

1) Incandescent Bulbs: The traditional yellow light bulbs which were available in various variants: 40W, 60W and 100W, are the most inefficient in terms of energy consumption. 90% of the energy they consume is lost as heat and only 10% is converted into useful light. Although they are still quite inexpensive (Rs 10/-) and a lot of households still use it, but they are the energy guzzlers. Many countries in the world have stopped producing them. Even if they are still there in working condition in several households, it makes a lot of sense to replace them with energy efficient options just from a cost saving perspective.

2) Tubelights: The fluorescent lamps are better than Incandescent bulbs (50-70% better in providing same amount of light) and they have been there in the market since quite some time. It started coming in the form of tubelights (something which most of us have known since our childhood) and later graduated to come in form of CFLs. A typical fluorescent lamp has a ballast (to stabilize the current through the lamp) and a tube. In past tubelights used to come with electromagnetic ballast which caused the lights to flicker on start. Now a days we get electronic ballast which prevents the fluorescent lamps to flicker. Electromagnetic ballast consumes for electricity than an electronic ballast. Most tubelights today have electronic ballast. Tubelights are also available in various variants: T12, T8 and T5. These numbers represent the thickness of the tubelight. The smaller the number, the higher the efficiency. T5 tubelights with electronic ballast are the best available fluorescent tubelight options in the marketA T12 tubelight with a electromagnetic ballast typically consumes 55W of electricity but a T5 with electronic ballast will consume only 28W of electricity (comparison is for a 4 feet tubelight). Thus a T5 provides about 50% electricity saving over a regular T12 tubelight. T8s are typically 38W tubelights and are better than T12s. Although T5s are little expensive, the payback is within a year. Also their life is quite good and they last for 3-4 years at least. Many companies give 1-2 year replacement warranty on T5s. Thus the payback happens within the warranty period.

3) CFLs: CFLs have been regarded as the best energy saving option in our country since quite some time. CFL is a variant of fluorescent lamps (or tubelights) but has a different application. CFLs act as a point source of light (light originating from one point) whereas tubelights are line source (tubelights have bigger lengths) and thus the area covered by tubelights is lot more than that of CFLs. This is the reason why a lot of people feel that CFLs produce lesser lights than tubelights. Even with equal wattage (2x14W CFLs) the amount of light is felt lesser than a T5 tubelight (of 28W) because of CFL being point source. CFLs being compact in size provide options to create smaller (lower wattage) bulbs that can cater to locations where tubelights provide extra brightness (more than required). CFLs provide up to 70% energy savings over a typical incandescent bulb. Although a little more expensive than a incandescent, payback happens within a year.

4) LEDs: LEDs are the latest and most efficient lighting option which is available in the market. Their electricity consumption is 50% less than that of CFLs and fluorescent lamps for the same amount of light. LEDs also are long lasting with a life of about 10-25 years and their performance remains the same throughout their lifetime (Tubelights and CFLs get dim with time). Although a little expensive (with a payback of about 2 years), the benefit with LEDs is that it is maintenance free. Once installed, it will not need any repair of change for at least 10 years. A lot of companies manufacturing LED options give replacement warranty for up to 10 years which makes the option even more attractive. The only drawback of LEDs is the angle covered by the light. CFLs and tubelights provide lights in 360o where as for LEDs the angle depends on the kind of reflectors used in the bulb.  Some do provide larger angles so that is something that should be checked before buying.

Wattage of the bulb or tubelight has been traditionally used as the measure of amount of light produced by it, but watts does not represent the actual amount of light produced.  The amount of light produced is represented by a term called lumen. So to compare two lights, one should compare the lumen of output and the angle of delivery of light. Wattage just helps one estimate the power consumption.

Infographic9 Infographic12 infographic14

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64 comments

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1

Electronic chokes in Tube light fittings save ------ energy as compared to normal chokes
10%
5%
30%
20%
GIVE ME THE ANSWER?

2
Abhishek Jain (Mod)

Electronic chokes typically consume 3 Watts as compared to 15 watts of older non electronic ballasts.

3

what is the best LED alternative to replace sodium vapour lights for factory yard lighting in a foggy area which often experiences mist

4
Abhishek Jain (Mod)

Can you provide more details about your sodium vapor lamp? What is the wattage of the same?

5

is there any one to provide the comparative statement between T-5 tube light & 25watt LED ?

6
Abhishek Jain (Mod)

What kind of comparison do you need? Frankly 25 watt LED tubelight will be much brighter compared to T5 Fluorescent tubelight. 21-22 Watt LED would be much comparable.

7
Ajay Kumar Agarwal

I want to know about 5 star rating 36 watt tube light & rates for bulk quantity e.g 2000 PCs

8

Hi Abhishek,

How are you..

I have some questions about the LED lights.. I saw your page and understood LED lights are more efficient for power consumption compare to CFL bulbs/T8 Tublights.

I have constructed the flat and need your guidance to set up the LED Lights. Please find the dimensions of the flat and it is 3bhk

1) Foyer - 5' 4" * 6' 1"

2) Living Room - 14' 6" * 10' 6"

3) Dining Room - 12' 3" * 8'0"

4) Master Bedroom - 1 - 11' 6" * 13' 3"

5) Bedroom - 2 - 11' 9" * 10' 6"

6) Bedroom - 3 - 13' 9" * 11' 6"

7) Kitchen - 10' 0" * 10' 0"

8) Toilets - 4' 0" * 8' 0"

9) Sitout - 8' 0" * 4' 6"

10) Service Area - 10' 0" * 3' 6"

11) Private Terrace - 96 sqft

Light Points in the Flat :

Foyer, Sitout, Service Area & Private Terrace will have only one light points

Living Room - 4 light points + One Foot lamp

Dining - 3 light points + One Foot Lamp

All Bedroom - 2 light points + one Foot Lamp

Kitchen - 2 light points

Toilets - 1 light point

I am looking for your guidance to help me which Led brand is suitable and how much Watts are required for this.

My friends as mentioned some LED Assemblers and the brand they use is Edison led lights.. Could you please let me know whether

we can go through the assembled one or branded one?.. What are things we need to check for the assembled one?

Is heat sink and capacitors are separate entities while assembling the LED lights? or in Edison brand all thes entities are part of the led?

I will wait for your valuable feedback. Thanks in advance.

Thanks

Suresh

9
Abhishek Jain (Mod)

Hello Mr Suresh,

When you mention of multiple light points, are you looking for bulb type LEDs or LED Tubelights? If you are looking for tubelights then for

Living room you need 22 W tubelight
Dining Room you can do with 18 W tubelight
Bedroom 1 again 22 W tubelight
Bedroom 2 18 W Tubelight
Bedroom 3 22 W tubelight
Kitchen: 13 W Tubelight
Toilets and Sitouts 7W LED bulb.
Service Area, Foyer and Terrace a 5 W or 7 W bulb would be good enough.

You can either purchase LEDs from reputed manufacturers like Osram or you can get them from LED Assemblers. LEDs have 4 components: The LED itself, Driver, Heat Sink and other reflectors. In India LEDs are mostly imported. Osram is the best and top notch quality LED followed by Edison and Samsung. There are lot of Chinese products that are not good. Drivers, heatsinks, etc are mostly made in India by Indian manufacturers. There are also companies that are importing everything from China (like Syska). They are not too bad in quality but certainly not at par with Osram. You can go for any local assembled LED as long as you get 2-3 years of warranty. Anything less than that is risky.

You may refer to these links to learn more:

https://www.bijlibachao.com/lights/led-lightning-outdoor-enclosure-of-led-ip-rating-encasing-ip55-ip65-lm80-lm79-buying-led-bulbs.html

https://www.bijlibachao.com/lights/led-lamp-led-heatsink-heatpipe-what-is-heatsink-material-aluminium-copper-thermoplastic.html

https://www.bijlibachao.com/lights/sharing-experience-of-buying-led-luminaire-for-a-residential-society.html

10

Hi Abhishek, Thanks for sharing the information... I m from Chennai and not able to find the orsam brand led lights here... I see these are the brands available in Chennai - Wipro, Crompton Creaves, Everyday, Philips, looklite, etc (Except looklite brand All the other brands are 2 years warranty).. Could you please let me know, where i could find the orsam brand in chennai? or could you please let me know, the other brands which i could consider in LED lights. It will be helpful.

Regards,
Suresh

11
Abhishek Jain (Mod)

In general I have not seen Osram selling in retail. They mostly do bulk deals. Also I am not sure where you can find them in Chennai. Any brand that give 3 yrs or more in warranty should be good. As long as you get payback for what you invest before the warranty period, it would be a good deal.

12

Hi Abhishek,

Thanks for the information... I did some research on the LED lights in shops in Chennai. I m able to find the below information..

Philips - 2 year warranty
Wipro - 2 years warranty
Crompton creaves - 1 year warranty
Teknolite - 2 years warranty and full service till lifelong

Could you please shed some lights on teknolite brand... Is it good to buy the teknolite tube and bulb brand???

For bedrooms I m planning to put designer lights.. Could you please let me know how much watt I could put..

All bedrooms size is b/w 11'*10', 13'*11'and 11'*9'..

Regards,
Suresh

13
Abhishek Jain (Mod)

Hello Mr Suresh,

There are several local Indian manufacturers that are making good quality LED luminaires these days. And they are no less than like of Philips and Wipro. Although Osram remains the best in LEDs, but they are not easily available in market. I checked the catalog and specs of Teknolite ( http://teknolite.in/Teknolite%20Catalog_2014.pdf ) and it looks good. They use Edison make LEDs which are one of the best in the market (right after Osram and along with Samsung). The other technical specs also look good. If their terms of service are better then I do not think there is any harm in going with them.

For your bedrooms anything between 20-30 Watts of LED lights should be good. The smaller room can have less, the bigger room can have more.

14

1) I have 4 T5 (54w per tube) tube fixture as a grow light for bonsai and orchid indoor growing. The system work perfectly. But i need to know is there any better alternative to this ? i mean can i use led flood light ? or led tube ? will they give same PAR, LUMEN, COVERAGE, SPECTRUM ? Will they be dimmer or brigther than my t5 ? please suggest in cfl or leds(prefered).
2) My friend who is also a hobby grower have a little different setup. He have 400w HPS setup so what is the suggestion for him ?

15
Abhishek Jain (Mod)

Hi Altainta,

Do you have any specific requirement for lumens & color temperature? You can certainly achieve it using LEDs, you just need to know how much is the requirement. LEDs are unidirectional and can be used to provide appropriate amount of spread. For general use, an 18 W LED tubelight is equivalent replacement for a 28 W T5 tubelight. So 36 W LED would be equivalent for 54 W T5. However fluorescent tubelights have a 360 degree spread and so a lot of their lumens are lost. But LED tubelights are of about 120 degrees spread and do not loose lumens. And that is why LED save electricity. But you need to know 1) Spread needed in angle (will depend on position where the light is placed) 2) Ideal number of lumens (suitable for the bonsai).

After knowing this, the LEDs can be chosen accordingly.

16

Hello Abhishek Jain,

Any update ?

17

Hi Abhishek Jain,

Note : due to website link problem in this blog i edited the link

I think this will be a little longer discussion please bear with me..As a group of nature lover want so many answers.

I need answer to 3 thing

Replacement for 4ft t5 florocent hanging fixture with 4 tube and reflector !

Replacement for 400 watt MH/HPS !

Replacement for 600 watt MH/HPS !

I will be comfortable with 1-4 hanging light for 4x4 area no problem. Coverage is important

1) Color temp - I will need any 2 of this range (three range)..

Warm white , Day light /cool white

2700k - 6500k range

low 2700k (as my hps) , med 5000k, high 6500k

2) Placement of the light will be lower than 2ft on the plant directly. lowest will be 6 inch (untill see the sign of burn). The light will be hanging on the plant directly.

3) Lumen - Greater than the 4 tube combined of 54w T5 Produces or 400w HPS (area 3 x 3 feet covered). I asked this in my friend circle and they say best is 600w Hps or 54w 4 tube fixture with reflector .

I guess one T5 54w produces 5000 lumen and T5 28w is like 2700 lumen. Higher the lumen the better.

4) LED FLOOD LIGHT - I was looking at LED Flood light but doesn't know if it is suitable than i found a video on youtube that says it works (with proof)

youtube. com/watch?v= oTQ2DEaO780

the light he used

lightingever. com/50w-super-bright-led-flood-lights-ww.html

Can we get similar trusted led flood light ? also will it work in my case ? what will be the cost and company model ?

5) Also here is used DIY LED FLOOD LIGHT "BULBS" (I think it is kind of weak but 2-3 of this unit will work). But i am unable to find the specification in our online websites mostly they are lower in power but shows higher in watt. A reliable company model will be good for LED FLOOD LIGHT BULBS.

instructables. com/id/Build-Your-Own-3120-Lumen-LED-Grow-Light/?ALLSTEPS

6) Please remember that the difference in performance of 10-20% overall doesn't matter. We need Value for money while buying and the running cost.

18
Abhishek Jain (Mod)

Hi altainta,

If we compare LED luminaires with HPSV or Fluorescent lights in terms of lumens output per watt (or efficiency), then we will not find much difference. A typical T5 tubelight will have efficiency of 90-100 lumens per watt and a LED light would have efficiency of 100-110 lumens per watt. So if you want a replacement of a 54 watt T5 tubelight purely in terms of lumens output then it's equivalent would be 44-45 watts LED tubelight. Now this is purely in terms of number of lumens.

However the difference between a fluorescent and LED is that Fluorescent lamps spread their output all around (360 degrees) the luminaire. While LEDs are unidirectional. So a typical LED tubelight (which is considered as a replacement of flourescent tubelight) would give a spread of 120 degrees. Which makes all the lumens concentrated in one area. The lower that you go in beam angle, more lumens you will get in that area where the light falls. So an LED spot light is highly efficient as compared to a regular spot light.

Typically for home use an 18 Watt LED tubelight gives similar amount of brightness (lux level) as compared to a 28 Watts T5 tubelight. The lumens output of 18 W LED may be less, but because the beam does not spread and much of the light is not wasted, it gives equal brightness.

Getting various color temperatures: warm white, cool white or daylight would not be an issue in LED. But what would be more important to determine would be the type of LED luminaire.

Replacing Tubelight with LED tubelight will not make much sense as you do not need a wide spread of the light (120 degrees). From what I understand from your message above is that the light will be more like a spot light where it will just have to focus on the plants below. And for that going for LED Flood light would be far better than going for LED spot lights. You will have to determine the angular spread of the light if you want to hang it from top.

You know that the height is 2 ft. Applying simple trigonometry, if the beam angle of the flood light is 60 degrees, it will cover an area of radius of about 1.2 ft (at the base however you will have to consider the distance between the leaves and the bulb). If you go for wider beam angle, then it will cover more area, and if you go for lesser beam angle it will cover lesser area. So choosing the right beam angle would be important.

Now although lumens is the output of a light bulb, but what really is important is the lux level. Lux is the amount of lumens received per sq meter at any given point. The closer you are to the bulb, you will have more lumens, farther away you go from the bulb, you have lesser lumens. A spot light would have more lux value at any point even though it has lesser lumen output than a bulb which is used for general purpose. You can even measure the lux value at your plant by using an android app: https://play.google.com/store/apps/details?id=com.notquitethem.android.luxmeter&hl=en

Now I am sure all this information would be confusing, but to be really frank, I cannot give you an exact light bulb to install without knowing a whole lot of things, because LED lights have different beam angles and lumens output.

A typical 600 W HPS bulb will have about 60000 lumens output. But that will spread. LED general purpose luminare with similar lumens output would be of about 450 Watts. But if you go for spots or flood lights, you can possible achieve what you want with lesser wattage as well. But then everything will have to measured and then only it can be derived. Going for 450 watts general purpose LED with much wider spread (about 120 degree spread) would be safe I would say.

19

---Going for 450 watts general purpose LED with much wider spread (about 120 degree spread) would be safe I would say.----

So can you suggest any. I will try to communicate with the existing dealer related to the technical info like
1) Beam Angle
2) Lumen / lux output
----------------------------
Please put a comment on the instructable i provided plus the youtube video i provided.
In both link i would like to know a similar product in india (or atleast near to it). In the video the person uses LED flood Light of two colors for the plant. He even uses a motor to move them (have never seen this before mostly stable). He uses LED FLOOD LIGHT
In the instructable the person uses LED FLOOD BULBS. So for this diy's i need suggestion on the Bulb Or the Flood light. Multiple Bulb can also achieve the result as the Single Chip Flood Light.
The only site in india i found having good range is tolexo. They have 50 watt LED Flood blub and many flood ligth with different range. The only problem is (and major problem) that they have very less details of the product. So i am afraid of the same.
I product suggestion will help to evaluate the thing. This is only for testing purpose i will not buy the full setup. Will try few product before actully zeroing on any thing for testing purpose. So please suggest something.

20
Abhishek Jain (Mod)

HI,

Not sure about the motor, but there are several manufacturers of LED lights in India now. And LED Floodlight is a very common application. You can check this catalog from Syska: http://syskaledlights.com/index.php/industrial/led-flood-beam-lights.html

Philips, Osram and several local manufacturers make LED light. But I would suggest going for Philips, Osram or if you do not get them then Syska. As I mentioned earlier, I think 450 Watts regular LED Flood lights should give you the output that you desire for your plants. However providing a detailed analysis is difficult without evaluating the actual setup.

21

Thank you very much for the reply. Alas in the end i have to experiment ! It is too costly too ! Currently the famous thing in LED is COB chip on board. the rate of which will be too much (insanly). Will take some of you tips and will work around with Available bulbs and flood light ! I think i must only look for real power and branded item. No problem in checking real power as i already have device for that. Never mind thank you very much again for the wonderful comments. Thats really means a lot to us!
PS: still u have said much abt the videos

22
Abhishek Jain (Mod)

I am glad that my comments were useful for you. There is little that I can help with sitting remotely. General lighting (that of a room) is easier to suggest. But specific requirement does need some analysis. I wish I could provide you exact information.

23

we have 4 towers of 10 stories and we have installed cfl and tubelights, will it be a wise decision to save energy by installing led every where. i dont know exactly about watts of them but this is to save our monthly maintenance

24
Abhishek Jain (Mod)

It certainly can save a lot. At one society in mumbai we were able to save about Rs 15000 per month (out of Rs 45000 per month) by switching to LED. You can read the case study over here: https://www.bijlibachao.com/lights/sharing-experience-of-buying-led-luminaire-for-a-residential-society.html

25

I use 22 Watt CFL bulb in our rooms. 5 CFLs light up our rooms. Consider that each bulb runs 7 hours daily. Now I plan to replace each 22 Watt CFL bulb with 14 Watt Philips LED bulbs (Total 5 Pieces). I would like to know, How much money I can save monthly by replacing 5 22 Watt CFL bulbs with 14 Watt LED bulbs? Please reply at the earliest if possible.

26
Abhishek Jain (Mod)

Hi Nizam,

Currently you use 110 Watts (22x5) for 7 hours, which means you use 770 Watt-hour or 0.77 kWH or 0.77 units of electricity per day. If you replace it with 14 watt LED then you would use 14x5x7 = 490 Watt-hour or 0.49 units of electricity per day. So your daily saving would be 0.77-0.49 = 0.28 units of electricity. In a month you would save 0.28 x 30 (assuming 30 days) = 8.4 units of electricity. Your tariff will depend on your city, state and your electricity consumption (you can check the latest tariffs on this link: https://www.bijlibachao.com/news/domestic-electricity-lt-tariff-slabs-and-rates-for-all-states-in-india-in-2015.html). Assuming your average tariff is Rs 5, you would save 8.4x5 = Rs 42 per month.

27

sir,
what is led replacement for 45w hpsv bulb (please attach a link if possible)?

28
Abhishek Jain (Mod)

Hi SD,

Typical HPSV lamp has a luminous efficacy of about 80 lumens/watt. LEDs have 100-110 lumens/watt. So assuming LED to have 105 lumens/watt efficacy the lamp wattage required would be 45x80/105 = 34. However LEDs are quite bright in general. So 25-30 Watt LED outdoor lighting replacement should be good enough to replace 45W HPSV.

29

How to select LED tube lights. Who are proven manufacturers? Wall mounting type with good illumination.

31

Dear Sir, I am having an energy saver tubelight of orient pspo having T5 tube of 28W (whole tubelight module with fitting...not just the glass tube, something like this but not exact same model http://www.orientelectric.com/shop-online/slim_line_pearl_28w-239.aspx ). I bought the tubelight for Rs. 650 and it stopped working after 1 years and 2 months. I thought the tube is damaged so i changed it but the problem is with the tubelight circuit. Either electronic ballast or something other is wrong with it. However, when i called over orient team they simply refused to repair the tubelight because it was out of the warranty period which was of 1 year. And none of local unauthorized repairers in my city is ready to repair it they said its impossible. I am very disappointed on this early breakdown of the tubelight. Please help me what should I do. Is there anyway to repair it or shall i simply throw that away and buy a new one. Buying a new one will again cost me much so please of there is any way to repair old one do tell me please.

32
Abhishek Jain (Mod)

Hi Deepak,

It is very difficult for us to tell the fault sitting remotely. Are they not repairing it even for some payment? At least they can help find the cause. You will have to contact a local electrician to find the fault with the same.

33

Thank you for replying sir. I contacted company but they simply refused...they are not repairing it even if i am ready to pay. And obviously I am not going to pay more than in what a new tubelight comes. I opened the circuit and found that in the circuit, a current limiting resistor, that was soldered to one of the wire incoming from main, is blown off. The tragedy is, i cant figure out that the resistor is of how many ohms since the blown resistor didn't had color coding, it was just of pale light olive green color. I also dont have any other spare tubelight of same brand and model and also...since the resistor is damaged , i cant use multimeter. However i called company for the part of which i was having doubt but they are just unhelpful. I think that i have no option than to buy new one. I had good experience with havells E-Lite desire tubelight fixture, its working since 1 yr 9 months, didnt even changed the tube yet, even once. Orient has simply disappointed me. I'd buy a new one please suggest me which one to buy.

34

HI, I have Crompton Greaves litelight T5 fixtures (5 nos) since 2009, which i have used thoroughly and the original tube/lamps are still burning bright and expecting many more years to come. I suppose T5 fixtures of Crompton greaves are the best bet maybe followed by Philips. I feel smaller players like orient may not be up to the mark of the bigger ones. i suggest u to go for CG.

35
Abhishek Jain (Mod)

Hi Deepak,

You may try Havells T5 or Philips T5. Our experience with Havells has been quite good.

36

Do they make a t5 in gold or yellow color yet?

37
Abhishek Jain (Mod)

T5 tubelights are available in various color temperatures. So yes they are available in yellow color as well. You will have to check the color temperature of the tubelight. It should be around 2700K to 3200K. For more details check http://en.wikipedia.org/wiki/Fluorescent_lamp#/media/File:Kelvin_Temperature_Chart.svg

38

I need to Purchase Light for my Fish Tank
i was thinking for a 24" - T5 Fluorescent TubeLight which consumes 20W
But later in many sites it was written that LED Lights are best and Save's Lot of Energy
But i am really confused because when i searched for 5 M White LED Light Strip 5050 on eBay.in, it says it consumes 72W and is 900LM (color temp 9000k)

39
Abhishek Jain (Mod)

Hello Satyam,

A 2 feet T5 tubelight consumes about 14 watts and if you are looking for equivalent then you can get a 2 feet T8 or T5 LED Tubelight of 9 Watts. You can easily get them on ebay or Snapdeal. Here are a few links:

http://www.ebay.in/itm/like/131268753651?aff_source=Sok-Goog
http://www.snapdeal.com/product/syska-t5-2-feet-led/619517275463

40
Ramakrishna Rao B V

I have T5 Tube Light fitting - Electronic Tubelight Fixture - 28 Watts - 4 Feet. Can it be replaced by LED tube without the frame

41
Abhishek Jain (Mod)

You can certainly replace it with T5 LED tubelight. Also in LED T5 will be cheaper than T8.

42

hi abhishek,

my room is about 10*18 ft. and in one corner my kitchen is there and in another corner I have kept bed. how may tube light I have to install considering if I am in kitchen the light wont disturb the sleeping one. I am planning to put 4 tubes of 1 ft. of T5.

We are total seven family members including 2 childrens so which geyser will do for getting hot water for bath and how much will be increase in bill per month. we leave in mumbai and BEST supplies electricity.

43
Abhishek Jain (Mod)

Hi Archana,

For a 180 sq ft room I think 4 numbers of 2ft T5s would be better than 1ft T5. Do you need geyser for 1 bathroom or more?

44

Hi,

There're many brands offering T5 tube lights ranging starting from Rs545 of various brands whereas I didn't see metallic frame tubelight anywhere. Could you share comparison between various brands & their luminous.

45
Abhishek Jain (Mod)

Hi Pravesh,

T5 tube lights roughly give around 2600 lumens. It can be plus or minus. However it is very important that you get one with metallic frame as the plastic ones tend to break in a few years. You can go for Havells as I know that they have metallic frame T5s.

46

Hi Abhisek,

I did look at various brand website including Havells. Many mentioned as "extruded aluminium". Is it same as metallic frame? Would you mind sharing exact model? Even Havells include same description for multiple model yet price varies. Why? Many shop keeper have limited option of brand Wipro/Phillips.

47
Abhishek Jain (Mod)

Hi Pravesh,

Aluminium body is the same as metallic frame. Sometime back most of them were coming in plastics which used to break as the ends of the tubelights used to release heat. So everytime the whole frame had to be replaced. But if you get one with metallic frame, then you will just have to replace the tube after the end of its life and the tube will just cost about Rs 125 or so.

As for the types, these are these available: 1) One feet 8W T5 2) two feet 14W T5 3) four feet 28W T5 and 4) four feet 56 W T5.

Within each of them they are available in multiple colors starting from white to yellow. 28W T5 is the one which is equivalent to old tubelights. 56 W will give double the amount of light and should be used in place of two old tubelights.

Both 28W and 56W are 4 ft tubes and the 56W one will cost more than 28W one. You can go for a philips one as well.

48

Hi Abhisek,

Need to buy Led downlights for home. Advise which brand is good Osram 1yr, Syska 2yr,Arraystrom 5yr warrenty. As Lumens is high for Syska then Arraystrom then Osram.

Need gud quality and life.

49
Abhishek Jain (Mod)

Hello,

Osram is known as the best technology brand for LEDs. So even though the warranty is less, the chances of it working long is more. My next choice would be a brand offering the longest warranty.

50

Getting a Lot of Information regarding how to save electricity by choosing right products, thanks for sharing.

Hi, I am Rakesh from Durgapur, West Bengal. Recently we bought a 3 BHK flat of 935 Sqft of carpet area so I want to select proper lights, Fans and other electrical appliances like AC,Geysers,Chimneys and all so that we can save Electricity and of course the Electricity Bill.

I am providing the dimension of the flat??

Living/Dining ? 15.6? X 16.4? , Master Bedroom ? 12? X 12? , Balcony (attached) ? 10? X 4? , 2nd Bedroom ? 10.4? X 12? , 3rd Bedroom ? 12? X 10? , Kitchen ? 10.4? X 6? , Toilet ? 12? X 4.10? , Toilet (attached) ? 4.7? X 8.2?

The Builder is providing MCB for Individual flats but I want to install RCCB for mine, so can you tell me what mA of RCCB would be appropriate for my home.

Our flat is on 7th Floor. We already have a 160 liters BEE 3 star rated Godrej Fridge, A 20 ?? Sony Wega TV , A Samsung Fully Automatic Top Load Washing Machine ,A 15.6?? Laptop.

Please Guide me

51
Abhishek Jain (Mod)

Hello Mr Rakesh,

What kind of lighting are you planning to put in the rooms? If you are looking for regular tubelights then you can go for T5 tubelights. Living/Dining can have 2 T5 (28 Watts) tubelights, Master Bedroom can have 1, Second and third bedroom can also have one each, and in the kitchen you can put two 7 watt LEDs (you can get philips LEDs on ecommerce sites) or 10 Watt CFLs. For toilet 1 you can go for a 2 ft (14 W T5 tubelight) and for toilet 2 you can go for 1 ft (8W T5 tubelight). Now this is very simple lighting for high energy saving. But if you are looking for fancy lighting then the solution would be different.

As for Fans, you would need 2 fans for Living/Dining room and 1 for each of the bedrooms. If your usage of any of the fans will be high then you can consider going for energy efficient ceiling fans like Superfan, Havells Fusion-50 or ES 5 star, Orient SUMMER CROWN or Energy Star, Usha TECHNIX FLAIR, Crompton Greves HS PLUS.

Which all rooms do you plan to put ACs? and what will be the usage of these ACs in hrs? Also is 7th floor top floor?

Sizing of geysers will depend on the kind of usage. Will people be using them for shower bath or bucket bath?

For RCCB: We recommend all houses to put RCCB in their houses. The size will depend on number and kind of appliances (which will provide total current that RCCB should be able to handle) and sensitivity that you want it to have to current leakage. The rated current value of RCCB can be similar to the rated current value of the MCB installed in your house. As for sensitivity: a 1-10 mAmp current leakage can just cause pricking sensation and will not be life threatening. But current leakage of 500 mA can be life threatening. This link can show you what kind of impact leakage of current can have: please note a low value as 1-10 Amp can also cause frequent tripping if the wiring in your house are faulty.

52

One more thing I forgot to ask about lights, are there any specific brand to look for while buying T5 tube lights and how much will it cost?

53
Abhishek Jain (Mod)

You can look for Osram or Havells T5 tubelights. They are quite good. Philips also has T5 tubelights. Try to look for one with metallic frame (because plastic frames do not last long and then it becomes unnecessarily expensive to change frame everytime). Initially the set (with frame) would cost about Rs 600 (for 4 ft tube), but replacement tube (after 3-4 years) would cost about Rs 120-150.

54

Thank you very much for the reply

I planned for simple lighting to save more electricity, I think your suggestion is appropriate according to my need.

For Fans how is the service network of Super Fans? I know I can buy Super Fan on-line from their website, but how is the after sales service network?

As for the Geysers, we are family of 4 Persons, no kids. In Durgapur the minimum temperature in winter drops to 6-7 degree Celsius, so we might use the geysers for bucket bath and as well as shower bath.

55
Abhishek Jain (Mod)

Hello Mr Rakesh,

Superfan does not have a large sales/service network as they are a new company. But they do provide support on phone and if they are not able to solve it on phone they replace the machine. But if you find it a hassle then you can go for Havells Fusion-50 fan.

You should go for 15 lts water heater, you can look at these:

Havells QUATRO 15
AO Smith HSE-VAS-015
Havells PURO 15
Bajaj Majesty 15 GPU
Racold Eterno dg 15 lts water heater.

56

I am interested in buying LED yellow light bulbs that go in standard pin and screw holders. The wattage is 7 to 14 watts.

57

Surya electronic ballast tube not comes on when switched on. Later comes on automatically. Why so ?

58
Abhishek Jain (Mod)

Seems like a problem with the ballast. Electronic ballast switch on automatically.

59

yeah,LED lights save more energy and last long. Want quality LED lights, feel free to contact me, pls

60

Do we get cfl / led tube lights in India . If so, what are the prices

61
Abhishek Jain (Mod)

There is no difference between regular tubelight and CFL, as both use the florescent tube technology. LED tubelights are there.

Regards,
Abhishek

62

hi, i have constructed new house wanna put good quality fan and lights please suggest me which company shall i prefer for fan usha or crompton greaves and for fluorescent bulbs wipro or philips brand, please suggest.

63

Hi, imran,do you still want quality lights?email me pls:[email protected] Skype: yicai-sales003

64
Abhishek Jain (Mod)

Hi Imran,

All the brands that you have listed are good and top brands. It is better to compare various models rather than compare top brands.

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