LED ceiling lights

[Strat]

39 minutes ago, kobayashiGT said:

My room the LED is the old kind so have the relay. hahaha.

do you mean the external ballast or LED driver?

nowadays, most ceiling LED has built-in LED driver circuit. 

[kobayashiGT]

10 minutes ago, Strat said:

do you mean the external ballast or LED driver?

nowadays, most ceiling LED has built-in LED driver circuit. 

the driver.

[Ct3833]

2 hours ago, Jusnel said:

To any one who knows about electricity.

I want to change my LED ceiling light. So bought a new one.  Powerpac brand.  2nd pic

I opened up my old ceiling LED light and realised the wires are "built in" into the LED lamp.  See pic.  Can see that the light is burnt. Hence got to change.

How do I remove the wires from the old light SAFELY? 

 

Make sure you power off the light. There should be a connector around the arrow that you can unscrew two little screws to release the wire. Otherwise cut that place off and connect the wire to the connector of your new light. 

 

Edited June 17, 2020 by Ct3833

[mersaylee]

1 hour ago, Kb27 said:

Yes, disconnect the miniature circuit breaker first by pushing it down. If it's wired as standard, it should be a 6A (for lights) MCB. If it was wired to power socket, then the MCB will probably be 25A. You need to check which one.

To be safer, just shut down the main ELCB or RCCB. But your whole house will be without power, until you push it back on.

Now brown wire is LIVE. Blue is neutral. Assuming it's wired correctly, otherwise big problem. You can probe with a test pen, it should light up when there's electricity. Which means you have to ascertain by probing the brown wire first with electricity (all CB) on. You have to be very careful here, since you're probably standing on a chair or ladder. You don't want to hold the wire and fall over.

Now, if you've confirm the brown wire is indeed LIVE, shut down electricity and cut both wire individually, with a nipper. Expose the copper wires end by peeling away about 1 cm of plastic insulator. Remove the old LED. Connect to the new LED module brown wire to brown wire, blue to blue. This looks like a push and release clip, you may test it first by using spare wire somewhere. The copper wire should be fully inserted into the plastic clip and NOT be exposed. And obviously make sure the new LED is for 220~240AV and not 12VDC or anything else. This should be printed on the label.

Put back everything, and test the light with fingers-crossed.

Every line so detailed and perfect until the last one...no need to put everything back to test the light lah. Test ok then put everything back otherwise need to remove again. Use tape to hold the light onto the ceiling base plate suffice. 

[mersaylee]

2 hours ago, Jusnel said:

ok, good advice.  i go look at the CB

Glad you’d looked at the right one...light it up babe! 

Sorry can’t help it😆

[Jusnel]

1 hour ago, Cheesey74 said:

Oh man.. i can feel all the love in mcf, so many forumners chipping in to help n advise 😍...

All for one, one for all.  LOL

[Ysc3]

Last time I replaced all my PLL lights with LED lights,   I never off the CB...  Could see and feel the sparks whenever I connected the wires !😂 

[Acewin]

4 hours ago, Kb27 said:

Yes, disconnect the miniature circuit breaker first by pushing it down. If it's wired as standard, it should be a 6A (for lights) MCB. If it was wired to power socket, then the MCB will probably be 25A. You need to check which one.

To be safer, just shut down the main ELCB or RCCB. But your whole house will be without power, until you push it back on.

Now brown wire is LIVE. Blue is neutral. Assuming it's wired correctly, otherwise big problem. You can probe with a test pen, it should light up when there's electricity. Which means you have to ascertain by probing the brown wire first with electricity (all CB) on. You have to be very careful here, since you're probably standing on a chair or ladder. You don't want to hold the wire and fall over.

Now, if you've confirm the brown wire is indeed LIVE, shut down electricity and cut both wire individually, with a nipper. Expose the copper wires end by peeling away about 1 cm of plastic insulator. Remove the old LED. Connect to the new LED module brown wire to brown wire, blue to blue. This looks like a push and release clip, you may test it first by using spare wire somewhere. The copper wire should be fully inserted into the plastic clip and NOT be exposed. And obviously make sure the new LED is for 220~240AV and not 12VDC or anything else. This should be printed on the label.

Put back everything, and test the light with fingers-crossed.

Very well explain just cut off the old brown/blue wire and use a connector to join to the new LED light.

Before you start do remember to switch off the MCB first and perform LOTO if possible just in case your family member thought trip then go and reset and you will probably be in trouble.

Good luck do update us after your replacement.

[Volvobrick]

17 minutes ago, Acewin said:

 

Before you start do remember to switch off the MCB first and perform LOTO if possible just in case your family member thought trip then go and reset and you will probably be in trouble.

Now you have given Jamesc new ideas - asking his MIL to change light bulbs. 

[Jusnel]

6 minutes ago, Volvobrick said:

Now you have given Jamesc new ideas - asking his MIL to change light bulbs. 

"accidental" death? 🤣

[Volvobrick]

20 minutes ago, Jusnel said:

"accidental" death? 🤣

I think the legal term is misadventure.... 

[Kangadrool]

I will just take this opportunity to change to E27 bulb holder type lamp. Age is getting up, easier to change bulb. Hahahaa...

[Acewin]

21 minutes ago, Kangadrool said:

I will just take this opportunity to change to E27 bulb holder type lamp. Age is getting up, easier to change bulb. Hahahaa...

Yes have a point E14 or E27 will be easier to replace just screw in only.

[Kb27]

40 minutes ago, Kangadrool said:

I will just take this opportunity to change to E27 bulb holder type lamp. Age is getting up, easier to change bulb. Hahahaa...

It's true. I change my fan lighting from 22W ring fluorescent to 2x E27 bulb holder.

Then plug in 2 LED bright bulbs.

If they fail, easy to change.

[Apple-Tree]

7 hours ago, Jusnel said:

To any one who knows about electricity.

I want to change my LED ceiling light. So bought a new one.  Powerpac brand.  2nd pic

I opened up my old ceiling LED light and realised the wires are "built in" into the LED lamp.  See pic.  Can see that the light is burnt. Hence got to change.

How do I remove the wires from the old light SAFELY? 

 

I know I know. I very good in this kind of things one.  

Let me give you a QUICK evaluation to determine your level first, plus a quick disclaimer.

Questionaires :

a) What is SG Mains AC Voltage and Frequency ?

b) For SG Mains Potential Difference, what is the current that will results in fatality if a human is exposed to this amount of current ?

c) What is the technical name of the Brown and Blue wire ?

d) When a typical MCB (Mini Circuit Breaker) what is the name of the power line that is switched ?

e) What is Apparent Power of a Device ?

f) What is the ideal potential difference of the BLUE line to a reference ground for SG Power Systems/Network ? Is this potential difference always the same ?

g) What is the typical cross section area for the Brown and Blue line ?

h)  A MCB of 6A Rating is used to limit the current to a network of LED Lights.  Propose a preferred Current Curve for this MCB.  MCQ (a) Type A (b) Type B (c) Type C (d) Type D.

i) What is the minimum thickness of the wire in accordance to SG SS Standard for use in residential lighting ?

j)  A single 16A MCB is used to limit current to a few power points. By SG SS std, what is the max. recommended number of power point(s) that can be connected to this line ?

OK.  If you are able to correctly answer at least 7 especially question b.  Then you are considered an amateur and can DIY you household.  If not, I strong suggest you read up abit la ...... it will save your life one day one.  REALLY.

 

Sad Story Disclaimer.  An 18yo son died of electric shock because the father decided to DIY install a water heater, an the ELCB did not trip.  The wiring is really that bad.

 

OK.  Here is a quick quick procedure to change your LED Lighting.

1) Switch ELCB to OFF.

2) Switch MCB  to OFF.

3) Cut the Brown and Blue wire of the dead LED Lamp.  Cut the Wire One by One.

4) Trimmed of the insulation of the Brown and Blue wire to the recommended length for the new lamp - See installation instruction on packaging.  If no instruction, try 1cm trim.

5) Connect the wire to the push and clip connector. When done, visual inspect to see no copper wire are exposed. If exposed, redo step 5 until no Cu wire is no longer exposed.

6) Test lighting for 15~30mins. Turn off lighting, evaluate the thermal behaviour of the lighting. If too hot.........

 

Tired ...... need to rest liao.

 

 

 

[Beanoyip]

Actually I wonder why SG don't adopt an easier way of changing all these lights.

All you have to do is first prepare the house with connectors all over for your lights, so if there's ever a need to change the lights, just unplug and plug new one in.

PFA

[mersaylee]

Golden age ready...can also hang onto the walking frame and you’re good to go wherever the path shines...

 

[Robin]

i think i will just buy the led replacement and call my electrician 😂