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Topic Title: EV charger earthing
Topic Summary: Use of VOELCB where earth impedance is high
Created On: 14 March 2019 11:09 AM
Status: Read Only
Linear : Threading : Single : Branch
 EV charger earthing   - 26tannahill - 14 March 2019 11:09 AM  
 EV charger earthing   - mapj1 - 14 March 2019 11:39 AM  
 EV charger earthing   - 26tannahill - 14 March 2019 03:59 PM  
 EV charger earthing   - AJJewsbury - 15 March 2019 10:18 AM  
 EV charger earthing   - ebee - 15 March 2019 12:29 PM  
 EV charger earthing   - MHRestorations - 18 March 2019 01:25 AM  
 EV charger earthing   - gkenyon - 18 March 2019 06:05 AM  
 EV charger earthing   - ectophile - 18 March 2019 01:20 PM  
 EV charger earthing   - chrispearson - 19 March 2019 06:39 PM  
 EV charger earthing   - AJJewsbury - 19 March 2019 12:27 PM  
 EV charger earthing   - gkenyon - 19 March 2019 02:17 PM  
 EV charger earthing   - Legh - 19 March 2019 09:47 PM  
 EV charger earthing   - KFH - 19 March 2019 10:53 PM  
 EV charger earthing   - AJJewsbury - 20 March 2019 09:07 AM  
 EV charger earthing   - Zoomup - 20 March 2019 10:24 AM  
 EV charger earthing   - mapj1 - 20 March 2019 10:30 AM  
 EV charger earthing   - ebee - 20 March 2019 10:47 AM  
 EV charger earthing   - alancapon - 20 March 2019 10:48 AM  
 EV charger earthing   - AJJewsbury - 20 March 2019 11:03 AM  
 EV charger earthing   - alancapon - 20 March 2019 11:42 AM  
 EV charger earthing   - sparkingchip - 20 March 2019 08:39 PM  
 EV charger earthing   - mapj1 - 20 March 2019 11:39 PM  
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 14 March 2019 11:09 AM
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26tannahill

Posts: 2
Joined: 14 March 2019

I recently had an ev charger installed in my pme protected house. My house is built on sandstone rock therefore getting a TT earth is very difficult. Since the change to 18th edition there is no easy solution. Looking at the issues led me to believe the VOELCB which was installed in the house I grew up in was the answer. On looking at Geoff Cronshaw's article I discovered the regs had got there before me and the 450 ohm loop impedance of a single rod could solve the problem if I put in a VOELCB to monitor the voltage to earth of the PME connection, all I need now is a VOELCB.

Does anyone know of a supplier supplying one which meets current standards? A search on the internet does not suggest there are suitable suppliers.

I am concerned seeing the costs of obtaining an earth in my conditions that this may become a serious problem if installers do not accept the cost risk or VOELCBs are not incorporated in charge points. I am interested to know if others have experienced this problem?
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