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Topic Title: EICR Forms
Topic Summary:
Created On: 09 December 2015 08:03 PM
Status: Read Only
Linear : Threading : Single : Branch
 EICR Forms   - 20did99 - 09 December 2015 08:03 PM  
 EICR Forms   - spinlondon - 09 December 2015 08:24 PM  
 EICR Forms   - sparkingchip - 09 December 2015 10:24 PM  
 EICR Forms   - spinlondon - 09 December 2015 10:28 PM  
 EICR Forms   - monk - 09 December 2015 10:55 PM  
 EICR Forms   - mapj1 - 10 December 2015 09:08 AM  
 EICR Forms   - AJJewsbury - 10 December 2015 09:26 AM  
 EICR Forms   - leckie - 11 December 2015 05:13 PM  
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 09 December 2015 08:03 PM
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20did99

Posts: 12
Joined: 24 June 2012

I was wondering why on EICR forms we are not expected to record a Zs between line and neutral.

We have all heard of the RCDs should not be used as sole means of protection, however this always to seem's to be the quick fix for a loop reading that exceeds that permitted for the protective device.

Granted, if the Zs reading between line and cpc exceeds, then an RCD is the way to rectify this. However we should now prove that the device will still operate in the required time if short circuit fault between line and neutral should occur.

In my opinion, I think recording loop reading between L - CPC on a TT system is pointless. If you have proved that the fault protection and additional protection RCDs will operate (and the Ze is well below 200 ohms), then any fault to earth will operate these devices, but a fault between L - N will not. Therefore the Zs readings throughout an EICR should taken between L - N not L - CPC.

I hope this make sense
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