MCCB with RCD bolt on, anyone know how to work these settings out? Ignore settings now but this is upfront RCD TT system so I want to top one to be 0.3 for 300mA but unsure on bottom?
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Discuss MCCB with RCD settings in the UK Electrical Forum area at ElectriciansForums.net
not seen one of these before, but it loks like the topdial is for the tripping current, and the bottom one for the required tripping time.
OP
Yes I know lol not set it yet, obviously it’s upfront RCD so for discrimination I’m gonna set to 300mA as various other panels have 100mA but how would I set ms
I not sure I understand the question. You do realise that the time setting on the device is marked in seconds, and so you need to convert milliseconds to seconds?
Is the question, what is the appropriate time delay setting for the installation?
The minimum that doesn't cause a nuisance and at or below the reg requirement or customers spec.
The minimum that doesn't cause a nuisance and at or below the reg requirement or customers spec.
OP
It was left on 0.1 so 100mA and was nuisance tripping, hench I’ve changed to 300mA
Yes that was all, couldn’t find anything online I knew how to set current just the time
Reply to MCCB with RCD settings in the UK Electrical Forum area at ElectriciansForums.net
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