How to make trip condition, start with wiring in distribution board

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naz1234

New member
Location
malaysia
Hi, i want to make a trip condition
In the picture below, the BLUE is RCCB and the RED is MCB.

The problem is, when I trip the MCB, my AC plug still have power to make my lamp turned on.
But my RCCB is still ok, when I make the trip condition, my lamp is turned off.

Can anyone verify my connection? maybe there is wrong connection of live wire at MCB?

Here are Front image:
http://i.imgur.com/fQ6ZVfn.jpg

Here are back image:
http://i.imgur.com/SaODqgw.jpg



Thanks
 

Jraef

Moderator, OTD
Staff member
Location
San Francisco Bay Area, CA, USA
Occupation
Electrical Engineer
I think maybe you have your RCCB wired incorrectly. It's difficult to tell, but the blue wire is usually the Neutral, and it appears that you have that wired to the switched side of your RCCB, which means the hot side is on the solid connection.
 

GoldDigger

Moderator
Staff member
Location
Placerville, CA, USA
Occupation
Retired PV System Designer
I think maybe you have your RCCB wired incorrectly. It's difficult to tell, but the blue wire is usually the Neutral, and it appears that you have that wired to the switched side of your RCCB, which means the hot side is on the solid connection.
That would fit with the MCB working but the RCCB not interrupting the power. But the OP describes just the opposite.
So what is it that the MCB is switching?
 
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