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Topic Title: Low current Zs test tripping RCBO
Topic Summary:
Created On: 24 March 2019 08:53 PM
Status: Read Only
Linear : Threading : Single : Branch
 Low current Zs test tripping RCBO   - Sparkymania - 24 March 2019 08:53 PM  
 Low current Zs test tripping RCBO   - mapj1 - 25 March 2019 09:24 AM  
 Low current Zs test tripping RCBO   - chrispearson - 25 March 2019 11:52 AM  
 Low current Zs test tripping RCBO   - RB1981 - 25 March 2019 03:26 PM  
 Low current Zs test tripping RCBO   - KFH - 25 March 2019 04:37 PM  
 Low current Zs test tripping RCBO   - RB1981 - 25 March 2019 04:41 PM  
 Low current Zs test tripping RCBO   - Sparkymania - 25 March 2019 08:03 PM  
 Low current Zs test tripping RCBO   - mapj1 - 25 March 2019 09:14 PM  
 Low current Zs test tripping RCBO   - Sparkymania - 25 March 2019 09:29 PM  
 Low current Zs test tripping RCBO   - AJJewsbury - 26 March 2019 09:34 AM  
 Low current Zs test tripping RCBO   - Sparkymania - 26 March 2019 10:46 PM  
 Low current Zs test tripping RCBO   - Sparkymania - 27 March 2019 06:55 PM  
 Low current Zs test tripping RCBO   - RB1981 - 27 March 2019 08:02 PM  
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 25 March 2019 04:37 PM
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KFH

Posts: 799
Joined: 06 November 2010

I don't have a two wire Zs tester and have never had the problem with the three wire tests tripping RCDs although the no trip ones can take a long time on my Fluke.

I also have a 1553 with a dodgy rotary switch but as the only thing that it does not select is PFC I am not too worried. I can still manage a divide by 230. There are videos on Youtube about repairing/cleaning the rotary switch but I have not bothered so far and just have it as backup.
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