Discuss Odd test results on RCD Spur in the UK Electrical Forum area at ElectriciansForums.net

What has Zs
Aw right, will have to get my head round that, nice one. Where I was going with ZS scenario sounded right in my mind but hey ho potatas/potatoes , u learn something new every day :rolleyes:

Will an MCB operate at 30ma!

The RCD is being used for additional shock protection due to failure of basic protection/carelessness of user etc. it should operate before the end user receives a fatal shock.

The MCB offers protection to the cable.
 
What has Zs


Will an MCB operate at 30ma!

The RCD is being used for additional shock protection due to failure of basic protection/carelessness of user etc. it should operate before the end user receives a fatal shock.

The MCB offers protection to the cable.

Yes when you put it like that it all makes sense now. Feel rather sheepish now tbh to have made such a daft assumption. I mean the ZS itself wont affect the trip time will it :oops:. Will be reading up again on this subject and nail it.
 

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