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04, Nov, 2021

Summary of OZEV EV Charging Point Survey 2020-2021 This post provides a quick overview of key concerns discovered with EV charging point installations carried out by OZEV approved installaers and the main recommendations to be considered going forward.


Post sponsored by EVE - the award-winning Electric Vehicle Equipment Installers Course www.learninglounge.com/eve


OZEV commissioned CENEX to undertake a large survey of EV charging point installations carried out by OZEV approved installers in 2020-21. 


The report is currently available to those within the industry – by special request – so please email us your request stating your name, title, company or organisation that you work for and why you’d like a copy so that we can pass this onto OZEV for consideration.

  

Here’s a brief summary of report


  • 371 audits were carried out.

  • 167 different electrical contractors.

  • 15 different EV charging point manufacturers kit.


Although there has been an improvement in overall satisfactory installations - when compared to the previous survey carried out in 2018/19 – the total number of dangerous and potentially dangerous installations has increased by half a percent.


EV Chargepoint Installations 

Survey Report

2018

2020

Dangerous (C1 code)

0.5%

0.3% (1)

Potentially Dangerous (C2 code)

8.7%

9.4% (35) 

Improvement Recommended

(C3 code - doesn’t comply with the regs at the time of design/install)

69.6%

57.7% (214)

Further Inspection Required

Not reported

0.5% (2)

Fully satisfactory

21.1%

32.1% (119)


* Numbers in brackets indicate the actual number of installations.


EV Circuit & Charging Point Issues


  • 29.7% (38 installs) had selectivity issues between two RCDs in series

  • 24.7% (89 installs) did not have the charge point circuits adequately labelled

  • Approx. 10% of EV charging points using their own TT arrangement were not satisfactory

  • 4% (15 installs) had inappropriate rated protective devices in relation to cable sizing

  • 2.8% (10 installs) used AC type RCDs, which are non-compliant with Section 722 of BS 7671.


The report also covered the existing electrical installation in relation to the EV charging point and highlights that 7.5% of dangerous codes related to the existing installation and should have been rectified prior to the EV installation.


  • All Code 1s (of which there was only 1) was a general installation issue.

  • 72.1% (31 installs) of Code 2s were charging point circuit installation issues

  • 27.9% (12 installs) of Code 2s were general installation issues.

  • Existing supplies (concerning service cable, service head etc.) the most common issue was a lack of sealing.


There were some issues with incorrect earthing, including labelling:


  • Some installers did not confirm adequacy of the existing TT earthing system before using it for the EV install.

  • 5.5% lack of water bonding

  • 4.5% lack of gas bonding, but many more had loose or degraded clamps

  • 1.9% inoperative RCD


There were issues with poor cable glanding , cracked EV Charging Points casings and poor termination issues.


Some Key Notes and Recommendations


  • The available EV charging installation training on offer within the industry should be reviewed, to ensure it remains fit for purpose in a rapidly evolving and expanding industry, with the aim of striving for continual improvement.

  • Review the costs charged by installers to householders. There is a belief that more diligent installers are continuing to be undercut by others performing poorer quality work at lower cost.

  • Review the process to approve EVHS installers. The process requires installers to provide details of their Competent Person Scheme (CPS) membership, however more could be done to ensure that installers have the necessary knowledge of the specific requirements related to EV charging installation.

  • Collaborate with the Renewable Energy Association (REA) to understand how the EV Consumer Code can be used to further promote domestic chargepoint installation standards. 

  • Disseminate the findings of the audits by holding stakeholder workshops, possibly in collaboration with an industry body such as the IET, which EVHS authorised installers are obliged to attend. Regular attendance of workshops which are arranged at suitable time intervals could be a mandatory requirement for maintaining EVHS approved status.

  • Installers could submit the Electrical Installation Certificate (EIC) for the installation as part of the grant claim.

This summary is provided by learninglounge.com who produce top quality elearning for electricians:

www.learninglounge.com/eve for EV Charging Point Installation

www.learninglounge.com/18 for 18th Edition Courses

www.learninglounge.com/ecs for ECS Electrical Safety Unit Course and Formal Assessment.

Email. mail@learninglounge.com

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