I would like to purchase RCCB for my instant water heater shower use.
What kind of RCCB specification do I required to purchase?
The instant water heater shower that I have now:

Panasonic DH-3NDP1MS, 3.6kW, DC Jet Pump.

RCCB specification:
1) 10mA / 30mA?
2) Type A / Type AC?

Hope you find this useful as posted by one of the forumer in this thread

mine so far so good , i think its safe , hopefully

Bought the exact Hager model.
Can't afford Type A RCCB from Schneider.

This one is quite costly

How you intend to install it?

This type is din rail, db box type.

Yes, planned to install RCCB in DB for water heater.

The DB already have a rccb. Why install another 1 that so near?

The extra rccb for heater is mean to install as near as possible to the heater side.

In Malaysia, this type of unit is available by some electrician.

I guess it is the cheapest way.

As long as it work, it is okay. Safety 1st.

There is few way to make it nice. All is in the back post. But of course price will be expensive a bit.

I prefer the nicer way.

In US, those appliances using high power like heater, hair dryer, aircon etc, the 2pin plug is equip with the rccd. So the appliances that they buy have the rccd built into the plug. This is a good idea to protect you and the device from fire.

This is a aircon plug.

Normally the DB rccb is at 30mA and not the 10mA type. So the extra RCCB for heater should be installed next to the heater switch? If this is the case, then it will need a mini DB box for this kind of RCCB.

It should be install next to the heater plug or direct point.

You can use sharethebest picture way or nicer way at the back of the post.

Are PEX pipe commonly use for central heater piping?

http://www.rinnai.com.my/product/category/9/64

Is this Rinnai brand of water heater is the only instance water heater that comes with RCD? Even the popular brand like Alpha are having ELCB only.

http://www.alpha-electric.com/showroom_smart-series_18i.html

Any technical guys can confirm this?

https://forum.lowyat.net/topic/3413210?hl=rinnai

This will be for my common bathroom installation as in the picture attached

Need to hunt around for something similar 16A 10mA model.



This post has been edited by sharethebest: Feb 19 2017, 03:02 PM

hi all,

i have elcb installed beside WH switch n-th years back (refer to attached pic):


May i know whether i should replace it to RCCB with 10mA sensitivity?

That is rccb too.

If change 10mA might too sensitive. 30mA should be alright.

a 10mA RCD will save a life..

at 230V 30mA AC 50Hz can still kill a smaller sized individual..

The heater have another set of rccb of 10mA.

You might just need a 30mA less sensitive for a nuisance trip.