I remember abb have some device that can prevent trip from lightning. It just install beside the mcb.

Your rccb is fine. So for easy solution, just change it to 300mA.

I did say no tripping problem, didn't I?

According to Fengshui, fire and water do not get along well. Electricity running the water pump being fire and pond is water it means danger. To double protect I added the 30ma RCD to the pond circuit.

When you have a pond you should have it protected with another RCD. Few years back there was news kid(s) killed playing water of a fountain but no further news on that what cause the electrocution. You see, without a sensitive RCD I will not dare touching the pond water. It is just like having a seat belt plus airbag driving. It is not if but when accident will happen.

you mentioned before 100mA should be safer. btw which model of ABB which deem popular?

This --> "So for easy solution"

For proper way, that cost you a lot. Try check at ABB site.

By the way, if you suspect your koi pond is causing the trip, you better don't touch the water.

Ain't the fish already belly up?

It will not unless there is a connection/leaked to earth. The pond water is contained or isolated in the pond so when there is no earth (current got nowhere to go) it is not passing any bodies just like birds sitting on overhead live wires and dont die and fall.

You can put a bulb in a glass water tank and a +ve live wire, the bulb wont light up. You use a test pen tip touching a house live wire and your finger at the other end of the test pen (like you used to test for live current) and you are wearing rubber shoes, the test pen hard to get light up becuase there is no proper connection to earth but when you touch something like a concrete wall the test pen lights up without hesitation Dont play play

The word is dont touch the water. You can jump into the water and still live. Touch die, jump no die.

how much will they cost me. Care to share with me reference price tag? Whereabouts to get great deals at reasonable prices.

Hello good people, am reviving an old thread.



We've had this for 15 years. Whenever there's lightning, even in the far distance (a thunder as loud as a silent fart), a trip can happen. Can't quite remember anymore if this has been happening since the very beginning or if it's gradual. One thing that's for sure is I'm pretty tired of it.

So if we do have wiring leakage, by changing 'technologies' (some modern RCD?) will it help? Or irregardless of what circuit breaker we use, is it advisable to fix leaks anyway? My imagination tells me that trying to figure out where leaks are is no sane task.

What's the current contemporary recommended ELCB/ELCB-like device?

I've also posted in: http://cr4.globalspec.com/thread/97138

This post has been edited by biatche: Aug 13 2014, 10:30 PM

anyone know where to get a rccb auto recloser that can be set to 10 minutes or more?

Usually I will prefer manual reset ELCB, as when ELCB trips, it show something wrong. Is better to make sure all appliance are intact before reset. This is for safety.

Whenever RCCB/ELCB trips, it means something is not right in the circuit, and may require manual attention.

Auto-closed reset is defying the safety purpose of RCCB/ELCB.

I dont understand why people feel tripping is a nuisance..

Its for protection, and tripping actually proves your protection works.

Could be from the surge also..

Since 100A would also trip, then change back to 30A..

With regards to koi pond using 30A, I believe (apart from fengshui POV) it is to protect your pump motor..

Get DUVAL® Motorised Multi Auto Recloser with Type "AI" RCCB (DAR 330)

DUVAL® Motorised Multi Auto Recloser with Type "AI" RCCB - See more at: http://www.cornerstone.com.my/lvcontrol/in...h.whlu1Xtz.dpuf

Info taken from this 2012 thread:

Auto Power Reset and Surge Protector Review

You can see the test video here:

RCCB auto reset video

I bump this thread because I have similar problem & sharing the info might give benefit to others.

I made a research & I came across suggestion to use less sensitive RCCB. To use RCCB with "HI" type - i.e. High Immunity.

So..I bought one from forumer here, brand HAGER. Installed in Nov 2014.

As this year, no thunderstorm observed. Only 2 days back I considered very significant & can cause my RCCB to trip using the previous type.

I can conclude it does it job very well, as designed to do so.

When you have your ELCB tripped, you need to start do some basic troubleshooting.
And not directly changing it to less sensitive type. What if you really have an appliance that having problem?

Troubleshooting already done. Disconnect all electrical appliances & observe still tripping. So, no electrical appliance problem. Them call electrician to check. He verified all connection & safety protection, earth cable in good shape. He said in one area, not all house will trip at the same time. As electrician he observe similar case. Details explained to me but I don't understand.

Interesting. But how long you stay in this house?
BTW, there's something we never do all the time, which is taking out that outdoor rod and have a check on it
Like last time I work in O&G company, they have schedule to to a test on the copper rod.

This post has been edited by supersound: Jun 14 2015, 12:49 PM

In homes the outdoor rod is buried in the ground I think