Yes, indeed it is buried in the ground.
That's why we need to do a visual check.

Don't you have to dig it out or something?

If it is something needs to be done, it has to be done. Doing some dirty digging works is tedious or getting a house burnt down is tedious?

We just switched everything electric over to electronic. Seems to have solved the problem. Also I have been electrocuted before, it's no big deal

Hi sifus

My new house RCCB 63A 0.1A tripping randomly.
Did the usual diagnosis and trace the problem to one line supplying the front lights.
When the MCB (6A) for this in ON, cannot reset the RCCB, trips immediately.
When I OFF this MCB, then only can reset the RCCB.
After sometime however can reset back with that MCB ON.

The problem is transient, sekejap ada, sekejap OK.

The faulty line has a timer switch, which I thought was causing the problem, so call back the wireman.

He checked and found that the one line is carrying 33 light points (including 16 T5s and 10 mLED downlights) and 1 fan.
But I very seldom on everything. usually max 7-10 lights only.

He thinks it overload, and 'partition' some load over to the nearby 20A MCB. Don't know what it means.

But the RCCB still trips randomly. Although now can reset.

Any ideas how to approach? I suspect some wire are overheating, that why after a while cooling down the problem goes away, only to happen again later.

RCCB trip is telling you that something is shortcircuit. But not overload. If it overload, the MCB through that line will trip.

Since you able to isolate the problem and only that line cause the trip, it is much more easy to troubleshoot. But your electrician diagnose wrongly. Since all the light and electrical thing able to ON without cause the MCB trip, that mean there is no overload on that line.

For the shortcircuit, you have to look at the lighting, timer, fan, etc on that line. There is something faulty there. But which 1. So you need to further isolated those thing to 1 by 1 or by the switching group. ON 1 switch at a time and see will it trip. If no, than OFF it and proceed another switch ON. Till you find that cause tripping.

If this group of light cause tripping, than need to further isolate which light is cause the trip. You need to disconnect the light 1 by 1 and try to ON to find that spoil 1 that cause the trip.

Hi, my house is having the the same issue during thunderstom, my RCCB will always trip even on a minor "lightning", thinking of changing the RCCB, should I change to 30mA/100mA or 300mA? Which one is less sensitive to lightning?

Start reading from post #97 onward !

guys.. need some help..

my new house RCCB always trip during raining.

incomer from TNB goes to this
R,Y,B = 32A,415V and 10kA
looks like SPD but no earthing pole from this one

outgoing goes to RCCB in which the specs is
63A 415V 100mA

im thinking to change the RCCB with good brand such as ABB with same specs.
if the same thing happen i would install new SPD with earthing pole

another thing is my neutral terminal at DB box doesnt jump to earting terminal, i saw some videos and most of it jumped together.

is it normal 32A fuse for each phase goes to 63A RCCB? why dont used 63A fuse instead

This post has been edited by gagak_84: Dec 14 2015, 02:42 PM

RCCB is not the problem. It work fine. RCCB is not using earth to trip cause it is not a ELCB.

You have 3 choice to reduce the trip.

1) change the RCCB to less sensitive to 300mA or 0.3A. But will delay the trip if any short circuit.
2) Install a surge protector to absorb the surge voltage. It will channel the surge to earth. So your earth rod need to be good.
3) Check the earth rod infront your garden. The checking is in Ohm which less ohm is better. (below 100ohm)

If your RCCB trip, mean you have leakage.

During rainy day water may have enter some wiring and water conduct electric, so the electric current are leak thought the water.

Wher did u buy the Sine Tamer?

Have u solved this problem?
If u have, how did u do it?

on no 3, how to check the ohm on the rod i saw someone said Hager and schneider RCCB equipped by anti-storm protection.. is that true??

Thinking of to change my current RCCB with this one



This post has been edited by gagak_84: Dec 15 2015, 03:59 PM

The earth rod only can be check with earth meter. Which some electrician have.

You can try to change. But the 0.1A is sensitive. It still will trip. But lesser.

can i check whether my equipment have earth leakage at DB box..
which i check whether earthing din-rail has live current using test pen

Leave it to the electrician to check if you not experience.

Electric can kill. Don't touch if you really not sure.

Your house is running 3P. Phase to phase is 415V. It is dangerous.

I'm interesting in this ABB OVR T2 SPD (http://new.abb.com/products/ABB2CTB802341R8000), planing to install it in the DB



I'm wondering will it reduce the frequent RCCB trip when lighting hit nearby my house, I stay at the hill top, whenever lightning hit nearby, it is very high chance the RCCB will trip!

Is better to go for hager brand on lighting surge protector