trouble with newly installed MK c/u

[richy3333]

annoying thing is, the rcd dont trip if you plug small loads in

Could it be a combined earth leakage issue as it only happens when sufficient load has been applied? Have you ramp tested the RCD and used an earth leakage meter to see? Possibly a certain appliance causing the issue - freezer maybe?

 

[richy3333]

annoying thing is, the rcd dont trip if you plug small loads in

Could it be a combined earth leakage issue as it only happens when sufficient load has been applied? Have you ramp tested the RCD and used an earth leakage meter to see? Possibly a certain appliance causing the issue - freezer maybe? That's what came to my mind when you mention the IR results were ok?

 

[Knobhead]

richy, Mafeking’s been relived!

 

[Risteard]

You can, as with MCBs, put more than one circuit into an RCBO but it's not good practice.

Not technically possible as it then becomes one circuit. So you could have multiple cores rather than multiple circuits in the protective device.

 

[topquark]

Not technically possible as it then becomes one circuit. So you could have multiple cores rather than multiple circuits in the protective device.

There's always one, and it ONLY becomes one circuit when you install THEM into the MCB so I stand by what I said