Rcd tests

[freshwater]

Hi, I was changing an old Square D board, RCCB MAIN SWITCH, because it was tripping at 12mA when doing a ramp test.

Installed an rcbo board, and ramp test still trips at 12mA??

Any opinions on this?

 

[westward10]

You replaced the old board but still have a main RCD switch?

 

[PS Electrics]

Hi, I was changing an old Square D board, RCCB MAIN SWITCH, because it was tripping at 12mA when doing a ramp test.

Installed an rcbo board, and ramp test still trips at 12mA??

Any opinions on this?

Is there already leakage on the circuits? Your Tester might be showing a trip at 12mA but if you aren't starting at 0 then it might be tripping at 24mA in reality if there was 12mA leakage already present for example.

 

[mainline]

Hi, I was changing an old Square D board, RCCB MAIN SWITCH, because it was tripping at 12mA when doing a ramp test.

Installed an rcbo board, and ramp test still trips at 12mA??

Any opinions on this?

Did you expect, by changing the board, for it to cure the tripping fault ?