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Thread: non tripping trip
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30th May 2008, 09:58 PM #1
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- May 2008
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- 3
non tripping trip
hi i have just tested a fuse board that i fitted. The property has a TT system with a ze of 176 mohms and a pfc of 1.10ka yet on doing a trip test on the 30ma rcd it will not trip out on x1 or x5 ! I have changed the rcd for new to see if i had a faulty bit of kit but the new one didnt trip either just wondered if anyone had any ideas ?
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31st May 2008, 07:09 PM #2
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- May 2008
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Re: non tripping trip
sorry people it was a typing error it is ohms not mohms
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2nd June 2008, 03:57 PM #3
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- Mar 2007
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- Kent, UK
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Re: non tripping trip
Hi, does the meter trip on a normal TNS/TNCS system? Regards Jim
Never argue with an idiot , they will bring you down to their level and then beat you with experience
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5th June 2008, 10:13 PM #4
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- May 2008
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Re: non tripping trip
hi jim cheers for replying ! I have sourced the problem now it was a fault on a lighting circuit that for some unknown reason stopped the rcd tripping out on a trip test it is now behaving as it should and i am a happier man many thanks again mark !
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7th June 2008, 10:30 AM #5
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- Jun 2008
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- Kent
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Re: non tripping trip
Mark, I know you have sorted it now but what was the actual problem? I can't think what fault on the lighting circuit would have stopped the rcd from tripping,
regards,
Dave.
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