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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.
 25 March 2019 04:41 pm
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RB1981

Posts: 513
Joined: 16 September 2007

Originally posted by: KFH

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.

Unfortunately it's the loop tests that mine struggles with the most. Even if you get it on them it can suddenly switch off them and abort the test. In the leadup to Christmas it got to a stage where it was essentially unusable.

Thankfully I had my RECI Inspection about a week before - it would have been embarassing had it happened during that. The inspector asked me if I still had the 1553 and I told him that unfortunately it was likely to be the last year of it. I was surprised it didn't make it to the end of the year at that stage!

-------------------------
Walsh Electrical Services
http://www.walshelectrical.ie/
RECI REC & NICEIC Approved Contractor
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