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SuperBaby
17-02-2006, 08:22 PM
The ELCB of my house has been tripping randomly for two weeks. The electrician checked on it and nothing was found. I am an Engineer and I think I know how an ELCB works. But my case is very weird:

- Sometimes the ELCB tripped 4 ~5 times a day. Sometimes it didn't trip the whole day.
- When it trips, it can be reset. If there is a short-circuit of wall-embedded wiring, it cannot be reset (according to the electrician).
- No electrical appliances was switched on when it tripped.
- I have tried to UNPLUG all the electrical appliances, switched off the air-cons' main switches .... and still it tripped.
- I have improved the earthing by penetrating a 12 ft copper rod (old one was 6ft).
- I checked the water tank in the root and all water points for water leakages that might cause short-circuit.
- I have moved into this double-storye terrace house for more than a year. I have never seen a rat. My roof has no trace of rats.
- I have changed the ELCB.
- Next to the ELCB is a row of 9 MCBs. I have turned them OFF one by one and watched for hours. It still tripped.
- Only I and my wife stay here. No overloading of current. No newly bought electrical item.
- No raining or thundering most of the time when it tripped.

Even more weird .....

- Lately I noticed it that it never tripped in the midnight.
- I suspected it is due to some activities (such as turning on electrical items) of my neightbour. But the electrician said my neighbour's electricity has nothing to do with mine.

I am going crazy. I cannot eat, I cannot sleep .....

Any suggestion?

alexhay
17-02-2006, 08:44 PM
Hi Superbaby...my neighbour is an electrician...what he told is if there is a power trip, its might be because of ur neighbour...and its not ur direct neighbour..is the neighbour 2 or 3 doors away from you as its sharing the same power source...its something called power looping....what u can do is..try to check the main plug next to your meter...get a TNB technician to check on the meter side...it could be the main powersource coming into your house.

chsum
17-02-2006, 09:12 PM
err.. superbaby, did u try to change to a less sensitive elcb, I have this tripping problem when there are lightning during rain storm, but after I change it, no plobemo..

my dua sens

USJ27Resident
17-02-2006, 09:39 PM
The ELCB of my house has been tripping randomly for two weeks. The electrician checked on it and nothing was found. I am an Engineer and I think I know how an ELCB works. But my case is very weird:?

Nothing weird here... :p

Question: DID any of your neighbors do some sort of renovation lately? Cos I have been experiencing the same thing too... Found out that my neighbor a few houses away did his 3 phase wiring from the normal 4 core electrical supply that is found outside our house (instead from the main DB!).... Seems to me (as explained by the TNB fella) that the Neutral Load (cable) :confused: cannot take the load when all his electrical switches are switched "on" ....

Maybe you should get the TNB fellas to check on your neighbors and see if anyone did the same thing or something similiar to this... then get it fixed before you start losing all your electrical stuffs...
http://img156.imageshack.us/img156/6312/3phase3us.jpg http://img156.imageshack.us/img156/9923/3phase20ht.jpg

CCY
17-02-2006, 10:40 PM
OK...since you say that you have change the elcb and still have these trip once too often. It looks like you indeed have an intermittent leakage problem from the wiring or one or more of your appliances . Improving the earth won't make any difference in this case as that will only ensure the leaked current divert safely to the ground only n thus still trip the leakage breaker.
If you really want to find out where the problem or leak current is , there are ways to measure these leak . I think your electrician is unwilling to deal into the intricate process to trace where the `leak is as this involve physical disconnection of the earth , live and neutral incoming wire to place a proper meter to measure the current flow through. But intermittent problem is never easy to find and may take some days to capture the bug. With these reading at hand I believe it can be narrow down exactly where the leak is.
Any one of this condition will cause a trip . Live to earth wire or live to earth through the walls / floors and neutral to earth wire or neutral to earth through the walls / floors.

orchipalar
17-02-2006, 10:54 PM
Err...sometimes we tend to forget that our auto gate...refrigerator n thermal water heater runs on electricity...24/7...

Do check those n the water pump if one is installed as well...

Err...many many moons ago...Orchi once used a modified socket that has a light bulb fixed to it...n plug it in each electrical plug point...just to see if the light would be normal...or tends to blink or dim...so to speak...to detect any leakages...

n similarly Orchi would observe any existing light bulbs to see if the light blinks...or dims..

Ahem...it may sound tedious...but it might work this way...

Err...happy hunting. :)

SuperBaby
18-02-2006, 12:00 AM
DID any of your neighbors do some sort of renovation lately?
1) YES, my immediate neighbour (on the right) did some major wiring work (at least as seen at the front of the house). Maybe this explains why it never trips during midnight and tends to trip during early morning (when the neighbour wakes up and turns something on). But I checked with the neighbour on the left - they have no problem. Earlier I ruled this posibilities out as the electrician and an electrical Engineer friend told me very confidently it would not have anything to do with my neightbour.


Err...sometimes we tend to forget that our auto gate...refrigerator n thermal water heater runs on electricity...24/7...
Do check those n the water pump if one is installed as well...
2) As I said, I unplugged everything and switched off the main switches. Also, I turned off each MCB one by one for the first test and three by three during the subsequent test. It still tripped.


did u try to change to a less sensitive elcb
3) This is the option the electrician offered me two hours ago. I disagreed as it would impose higher risk to my appliances especially my computer and modem.

SuperBaby
18-02-2006, 12:08 AM
I forgot to mention this:

I turned off 8 out of the 9 MCBs next to the ELCB. I did not turn off the last one as it gives supply to my fridge (I have some fish and prawns inside). I went out at 8:30pm and returned before 12 midnight. I found the ELCB tripped again.

Anyway, there is nothing wrong with the fridge as I have tested this MCB and its line earlier.

I think there are two posibilities left:

1) The meter.

2) My Neighbour.
- I should test by turning everything back ON in my house. Then get the neighbour to turn his appliances on ONE by ONE until there is a trip. Is this the way to test?
- Really hard to talk to the neighbour about this. They have 3 dogs.

BTW, my electric company is NUR. I am a web designer and web application programmer staying in Kulim Hi-Tech Park. I should have mentioned that I am not from your neighbourhood. I found this Forum after an extensive search in Google. But I hope you guys will still help me out. Thanks.

orchipalar
18-02-2006, 12:25 AM
Err...the compressor of the fridge...works on intermttent...so do try again for longer period of time...to see if it trips when the compressor kicks in...

Secondly...some wall drilling works at your immediate neighbours recently...may have hit one of the wires on that wall which is shared with your neighbour who had the recent renovation done...concentrate on the plugpoints of that wall...

n recheck the tripping of your elcb at the main...

Good luck...

SuperBaby
18-02-2006, 12:31 AM
Err...the compressor of the fridge...works on intermttent...so do try again for longer period of time...to see if it trips when the compressor kicks in...
I already checked this. I turned the MCB of the fridge line off and it still tripped.



Secondly...some wall drilling works at your immediate neighbours recently...may have hit one of the wires on that wall which is shared with your neighbour who had the recent renovation done...concentrate on the plugpoints of that wall...
Yes, this is possible. Will check this.

blurrman
18-02-2006, 01:56 AM
hi sugarbaby,

from outside main line--->meter--->elcb--->mcb--->appliances

from the DB box, have you tried remove live, neutral just after elcb? if you do that and the elcb still trip, then it is confirmed that something outside is creating the problem.

if you did the above and confirmed problem from outside, below are the possible cause

1. faulty meter

2. surge/noise from the main line

3. neighbour's equipment created surge/noise and it went back to the main line and your elcb pick up and trip.

4. depending on the sensitivity of the elcb, your other neighbour might not experience it.

but anyway, once you confirmed it is from outside, just get the TNB people to look at it.

cheers

SuperBaby
18-02-2006, 02:44 AM
hi sugarbaby,

from outside main line--->meter--->elcb--->mcb--->appliances

from the DB box, have you tried remove live, neutral just after elcb? if you do that and the elcb still trip, then it is confirmed that something outside is creating the problem.
This is a VERY GOOD advice. I will get the electrician to do that. Why I never thought of that!


if you did the above and confirmed problem from outside, below are the possible cause

1. faulty meter

2. surge/noise from the main line

3. neighbour's equipment created surge/noise and it went back to the main line and your elcb pick up and trip.

4. depending on the sensitivity of the elcb, your other neighbour might not experience it.

but anyway, once you confirmed it is from outside, just get the TNB people to look at it.

cheers
I contacted NUR (my electricity company). They said it was not their business as they duty is to supply the power only. As long as there is an incoming power, the rest in on the users.

I think the possibility that it is caused by my neighbour is very high as the trippings started after Chinese New Year. I saw a few wiremen laying cables in his house. Also, the tripping timing suggested something:

1) Midnight ~ 7:30am : Never tripped.
- Possibility: Neighbour sleeping. No activities of switching on electrical appliances.

2) 7:30am ~ 8:30am: Tripped almost everyday.
- Possibility: Neighbour woke up. Some appliances switched on.

3) 8:30am ~ 4:00pm: It tripped but quite rarely.
- Possibility: The couple went to work leaving only the maid, Mary, at home. No much activities.

4) 4:00pm ~ 5:30pm: Started to trip.
- Possibility: The maid started preparing dinner (and other work) for the couple.

5) 5:30pm ~ 8:30pm: Tripped frequently. 2 ~ 4 times.
- Possibility: The couple are back home.

6) 8:30pm ~ 12 midnight: It tripped but quite rarely.
- Possibility: Past dinner. Less activities.

It is almost 3am now and I still can't sleep. You can imagine ...... I really envy your neighbourhood for having this website. Based on the number of people reading my messages, I know that the website is very successful. I wish we have something similar here in Kulim Hi-Tech.

GreyShadow
18-02-2006, 11:51 AM
maybe it's time to try an exorcist :p
maybe there's a poltergeist in your house? :eek:

Joe Gomez
18-02-2006, 12:14 PM
Hi SuperBaby,
My symptoms with my ELCB were similar.
I changed the balcony tiles upstairs and VOILA !!!! .... no more tripping.
I was, in my case able to figure out that it was water seeping thru and causing it.
Hence, the seemingly random occurence.
Over the last few days it has been raining heavily ...... I noticed sypmtoms cooinciding with rain.
However, b4 u go changing your tiles ..... determine whether or not iwater seepage is the caue. Identify source of water.

SuperBaby
18-02-2006, 12:20 PM
maybe it's time to try an exorcist
maybe there's a poltergeist in your house?
Yes, I was told the same thing by two of the electricians (my sister-in-law and my friend) :o


However, b4 u go changing your tiles ..... determine whether or not iwater seepage is the caue. Identify source of water.
Not possible. Today I switched off ALL the 9 MCBs and that means there is no incoming current to my house (ie., no current after the MCBs). It still tripped. So the problem has to be BEFORE the MCBs - the meter, the ELCB, the current itself, my neighbour ....

I woke up early today waiting for it to trip. As expected, it tripped at 8am - the time my neighbour woke up.

Net Rider
18-02-2006, 12:20 PM
Superbaby,

The way an ELCB works, it is not affected by anything connected before it (your neighbours). There is probably a fault in your house wiring just like mine was, and since it is intermittent, the leakage current must be borderline (around 100mA, tripping current for most ELCBs).
The only suggestion I can give you is to disconnected the supply at the main fuse box and test all your house wiring with a Mega Tester. (wiring contractors should have one).

I really sympathise with you, my house have hidden wiring and I had to hack the walls in a few places to solve the problem.

SuperBaby
18-02-2006, 12:57 PM
Superbaby,

The way an ELCB works, it is not affected by anything connected before it (your neighbours). There is probably a fault in your house wiring just like mine was, and since it is intermittent, the leakage current must be borderline (around 100mA, tripping current for most ELCBs).
But I have cut off ALL supply at the MCBs. Meaning there is no supply to my house after the MCBs. ???
Also, why is there such a prominent time cycle when it tripped? Meaning, why it only tripped when there are high human activities next door?

Firefly
18-02-2006, 12:59 PM
Net Rider's (mega tester) suggestion is one of the best way to test the wiring. BTW, an ELCB also trips when an EARTH and the NEGATIVE touches. It's not necessary that the live must leak. I had a nice time checking mine until I found my Netural and Earth was reversed in an appliance. One of them cheap china stuff.

SuperBaby
18-02-2006, 03:07 PM
Net Rider's (mega tester) suggestion is one of the best way to test the wiring.
Yes, but my electrician brother-in-law have problems getting the Mega Tester immediately.


I had a nice time checking mine until I found my Netural and Earth was
reversed in an appliance. One of them cheap china stuff.
If reversed, would the appliance function? This helps me to troubleshoot.


Net Rider: The way an ELCB works, it is not affected by anything connected before it (your neighbours).

Blurrman: from outside main line--->meter--->elcb--->mcb--->appliances

From the DB box, have you tried remove live, neutral just after elcb? if you do that and the elcb still trip, then it is confirmed that something outside is creating the problem.
Blurrman's instruction above conflicts with Net Rider's. If Net Rider is correct (then Blurrman is wrong), the ELCB will NEVER trip if you remove the connection between ELCB-MCBs. Who is right? This will help me to troubleshoot.

FineTuned
18-02-2006, 04:03 PM
Blurrman's instruction above conflicts with Net Rider's. If Net Rider is correct (then Blurrman is wrong), the ELCB will NEVER trip if you remove the connection between ELCB-MCBs. Who is right? This will help me to troubleshoot.
Have you considered the possiblity that you may not be having just a single problem? The fact that your tripping seems to be at times random and other times almost cause and effect seems to indicate multiple faults.........unlikely, but cannot be ruled out - remember Murphy's Law.

AllUrban
18-02-2006, 04:50 PM
On a slightly different note,

Occasionally the elcb light on my shower starts to dim, on off, and at the same time the pump starts wheezing

There is disruption in the water flow and then the elcb shuts down.

Sometimes it comes back right when I flip the trip switch, and sometimes it does not.

Would this be a wiring/power supply problem, a water seepage problem, or just faulty parts and a warranty issue on the ELCB itself?

Cheers, m

pcyeoh
18-02-2006, 06:17 PM
I think the possibility that it is caused by my neighbour is very high as the trippings started after Chinese New Year. I saw a few wiremen laying cables in his house. Also, the tripping timing suggested something:

1) Midnight ~ 7:30am : Never tripped.
- Possibility: Neighbour sleeping. No activities of switching on electrical appliances.

2) 7:30am ~ 8:30am: Tripped almost everyday.
- Possibility: Neighbour woke up. Some appliances switched on.

3) 8:30am ~ 4:00pm: It tripped but quite rarely.
- Possibility: The couple went to work leaving only the maid, Mary, at home. No much activities.

4) 4:00pm ~ 5:30pm: Started to trip.
- Possibility: The maid started preparing dinner (and other work) for the couple.

5) 5:30pm ~ 8:30pm: Tripped frequently. 2 ~ 4 times.
- Possibility: The couple are back home.

6) 8:30pm ~ 12 midnight: It tripped but quite rarely.
- Possibility: Past dinner. Less activities.

It is almost 3am now and I still can't sleep. You can imagine ...... I really envy your neighbourhood for having this website. Based on the number of people reading my messages, I know that the website is very successful. I wish we have something similar here in Kulim Hi-Tech.
Wow, you really know what your neighbour is doing every second of the day and night. Wow, you even know the maid's name. So far you have not ask the maid to change her name. Who knows the tripping will stop. Midnight ~ 7:30am : Never tripped. - Possibility: Neighbour sleeping. No activities of switching on electrical appliances. Hey SuperBaby, lucky for you if not whole night while they are "enjoying" themselves, you are busy running downstairs resetting your ELCB. So just because it doesn't trip your ELCB doesn't mean they are sleeping. They can be using battery operated gadget so you are lucky?? But I really pity you. Mine trips only during heavy thunderstorm. So whenever we leave our house for long trips, I have to pass my house keys to a friend in my neighbourhood to reset my ELCB or else my whole fridge stinks.

joker2107
18-02-2006, 07:14 PM
Would this be a wiring/power supply problem, a water seepage problem, or just faulty parts and a warranty issue on the ELCB itself?

allurban, not 2 long ago a couple from setapak died 2 warn us (pardon d bleak imagery) of d latent dangers of instant water heaters. n u r still using yr cranky heater. i'd suggest that b4 we lose another valued forumer u shud stop using d heater until it is confirmed that d weird happenings r not originating from it.

CCY
18-02-2006, 10:35 PM
From all the info gathered it seems to me that there is an intermittent neutral to earth fault occuring . The point of fault may be in the appliance itself. As what is mentioned that even after isolating the mcb the trip is still there. But do understand that switching of the mcb is only isolating the live wire to the switches only if the switch is off. The neutral wire is still intact and any leak on these wire to earth will definitely cause a trip. If you are able to megger these wires there is a high chance you may be able to nail this bug.

Do you have appliances that comes with suppression capacitors or varistors or GDT that connect L-N , L-E , N-E . These may be the culprit ....

SuperBaby
18-02-2006, 11:52 PM
But do understand that switching of the mcb is only isolating the live wire to the switches only if the switch is off. The neutral wire is still intact and any leak on these wire to earth will definitely cause a trip.
One engineering question:

- If the MCB is turned OFF (no live current) and the appliance is turned OFF, would it trigger the ELCB if I manually short-circuit:

(a) the neutral line (between the MCB and the appliance) to the earth?

(b) the neutral line of the socket (without the appliance) to the earth line of the same socket?

USJ27Resident
19-02-2006, 12:01 AM
1) YES, my immediate neighbour (on the right) did some major wiring work (at least as seen at the front of the house). Maybe this explains why it never trips during midnight and tends to trip during early morning (when the neighbour wakes up and turns something on). But I checked with the neighbour on the left - they have no problem. Earlier I ruled this posibilities out as the electrician and an electrical Engineer friend told me very confidently it would not have anything to do with my neightbour.

Thats what my neighbors' wireman said too... but we did a little experiment and found out that when he switched on the circuit breaker for his electric gate... trippppp! his house and 4 other houses in the same row.. later found out that the 13 core wiring done for the auto gate was damaged thus causing this intermittent tripping!

Our new neighbor was very apologetic after that... :p

CCY
19-02-2006, 09:30 AM
One engineering question:

- If the MCB is turned OFF (no live current) and the appliance is turned OFF, would it trigger the ELCB if I manually short-circuit:

(a) the neutral line (between the MCB and the appliance) to the earth?

(b) the neutral line of the socket (without the appliance) to the earth line of the same socket?\

Yes... Neutral shorted to earth will also cause a trip in both instances.

AllUrban
19-02-2006, 06:31 PM
allurban, not 2 long ago a couple from setapak died 2 warn us (pardon d bleak imagery) of d latent dangers of instant water heaters. n u r still using yr cranky heater. i'd suggest that b4 we lose another valued forumer u shud stop using d heater until it is confirmed that d weird happenings r not originating from it.


awww c**p :( now you've gone and spoiled my day.

So I'll get an electrician to check it asap.

Thanks very much

Cheers, m

Life Ranger
20-02-2006, 08:34 AM
One engineering question:

- If the MCB is turned OFF (no live current) and the appliance is turned OFF, would it trigger the ELCB if I manually short-circuit:

(a) the neutral line (between the MCB and the appliance) to the earth?

(b) the neutral line of the socket (without the appliance) to the earth line of the same socket?

I had this experience before as well as I couldn't find the cause of ELCB. And finally I removed the earth wire of my kitchen exhaust fan.

Since all the MCBs are single pole, you only turn off the Live wires at MCBs, if the Earth ire short the Neutral wire at an electrical appliance in your house, the ELCB will still trip......

(1) Suggest you to unplug all the electrical appliances even if the MCBs are off to see if the ELCB still trips.




Today I switched off ALL the 9 MCBs and that means there is no incoming current to my house (ie., no current after the MCBs). It still tripped. So the problem has to be BEFORE the MCBs - the meter, the ELCB, the current itself, my neighbour ....I woke up early today waiting for it to trip. As expected, it tripped at 8am - the time my neighbour woke up.

If you find nothing in the suggestion above...When all the 9 MCBs are off, it is confirmed the Live and Neutral wires after the ELCB do not supply current flow to anything in your house.... but what about your neighbour house ?

(2) My suggestion, when your ELCB trips, does any electrical appliance in their house stop working ? Is it possible to do a test : 1 person in the neighbour switching on the electrical appliances one by one, and another person watching at the ELCB at your house, see which specific thing causes the tripping....


I think you are almost there to find the cause.....

Life Ranger
20-02-2006, 10:59 AM
..Occasionally the elcb light on my shower starts to dim, on off, and at the same time the pump starts wheezing..There is disruption in the water flow and then the elcb shuts down..Sometimes it comes back right when I flip the trip switch, and sometimes it does not.
Cheers, m

It is safer to install a 10mA ELCB right before the instant water heater. It is not too expensive nowadays.

blurrman
20-02-2006, 06:15 PM
superbaby,

i don't want to go through long details whether this thing will trip because of fault before or after the ELCB, do a simple web search u will find a lot of info of ELCB or RCCB, some company claimed theirs will not react to anything (surge/thunderstorm) coming from outside, but some company state nothing.

the simplest test is to remove the wire coming out from it, if your unit is 2 pole, you should remove 2 wire

it it still trip, concentrate outside. if it does not, concentrate inside...simple...

cheers...

blurrman
20-02-2006, 06:18 PM
if it is outside, talk to your neighbour, do the suggestion like our previous brother suggested, go to their house, test one by one and see it if trips...

sharil5
29-01-2009, 12:26 PM
Do you still have this issue, my problem is similar.

My ELCB trips every 30 to 40 minutes even with all the electrical appliances (fridge, aircon, modem) is unplugged.

I even turned off all other fixtures (lights. fans) the ELCB still trips.

:confused:

bslee
29-01-2009, 02:09 PM
A proper test is an insulation test by a qualified electrician using a megger meter which can test each and every outgoing circuit line from the distribution fuse box. Each reading (with all appliances, lighting fixtures and motors DISCONNECTED) should be in near or infinity reading showing excellent condition. Any reading showing less than 1 MegaOhm is suspect. The megger meter generates a few hundred volts in small current and should uncover any faulty circuit. No such accuracy measuring with a silly battery operated multitester. It'll only capable of detecting a direct and deliberate short circuit. If the electrician tells you he doesn't have or don't use a megger, he can go fly kites.

sharil5
29-01-2009, 02:27 PM
thanks bslee. will take note of that. now I definitely need to track down a electrician and since it's cny season that would be another tricky bit.

bslee
29-01-2009, 02:34 PM
One more thing, its often people bang nails and hooks into the wall and ignorant of electrical cables lying underneath. Its been known and found many short circuits have been due to wall nails.

kwchang
30-01-2009, 12:13 AM
Agree with bslee - we had a similar problem and the root cause was discovered by accident when we had an iron fence welded recently. That weld tripped the electrical supply. We called our electrician and he discovered that the iron fence was originally bolted to our perimeter wall and by chance, the fence's securing bolt was embedded so deep into the wall that it touched an electrical cable embedded in the wall meant to power the perimeter wall lights.

Hence our problem was due to a constant leak from the damaged cable. Our house's electrical supply used to trip everytime lightning occured, even if it was quite a distance away. Once my electrician fixed the faulty cable, we have reduced the trips significantly.

However, it would be very difficult to identify where you have a hidden leak in your house. Sometimes luck is important in finding it. Did you know that a lot of wiring in our houses are just done by plastering electrical wires to the walls? If you had hammered a nail into the wall and it accidentally punctured the insulation of this live wire, that would be your leak.

patrick
30-01-2009, 09:28 AM
Agree with bslee - we had a similar problem and the root cause was discovered by accident when we had an iron fence welded recently. ............. If you had hammered a nail into the wall and it accidentally punctured the insulation of this live wire, that would be your leak.

That's why its so important to invest in a small wire/metal detector for use around the house. I use it everytime before I put in a nail, screw or drill anything at all. Many years ago a carpentar was fixing a wall cabinet in my house. I had then already own a metal detector I bought in the US and I used it to check the wall and told him there was a wire before he drilled. Just because he hadnt heard of such a detector, he ignored me (must have thought I was trying to be clever!) and went ahead to drill without a care! Before I could stop him, he kena wire and had a shock of his life! He didnt die but he must have learnt his lesson well that day!! Ha ha!!

Yourdadisangry
30-01-2009, 11:05 AM
That's why its so important to invest in a small wire/metal detector for use around the house. I use it everytime before I put in a nail, screw or drill anything at all. Many years ago a carpentar was fixing a wall cabinet in my house. I had then already own a metal detector I bought in the US and I used it to check the wall and told him there was a wire before he drilled. Just because he hadnt heard of such a detector, he ignored me (must have thought I was trying to be clever!) and went ahead to drill without a care! Before I could stop him, he kena wire and had a shock of his life! He didnt die but he must have learnt his lesson well that day!! Ha ha!!


Bro, where to find such device here in M'sia?

blurrman
30-01-2009, 11:15 AM
Bro, where to find such device here in M'sia?

major electronic shops at Jalan Pasar do carry them.

ACE Hardware i remember seeing one too.

VeeJay
30-01-2009, 01:08 PM
Alternatively you could get at ipmart

http://www.ipmart.com/main/product/Metal,,Voltage,2,In,1,Detector,JDT01,,Orange,15462 .php?prod=15462&cat=&find=&in=&curr=3

Net Rider
30-01-2009, 01:34 PM
If everything is unplugged and your ELCB still trips, then it is possible that your electrical wiring is shorting somewhere in the house. This may be caused by the plastic insulation of your wiring cracking due to age, ozone from pollution or even termites. This is not a problem until some water falls where the insulation is broken and causes a short. What you can do to check where the problem is, is by switching off all your circuit breakers (or removing all the fuses, if you have fuses) and replacing them one at a time until it trips. When you find the circuit that trips, then you can check the wiring in that circuit fully to see if the wires are exposed any where. (It may be inside the wall, usually between two adjoining wall panels, or it could be near fixtures or switches)