Electric Vehicle Charging - Unit 4: Issues to overcome with electric vehicle charging installations

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Unit overview

This unit provides an overview of the dangers associated with broken supply neutrals in PME installations, and how they provide a particular problem for EV charging equipment installations. The unit also introduces another issue that can affect electric vehicles on charge: the possibility that someone can simultaneously touch the metal body of a vehicle supplied by one installation, and exposed- or extraneous-conductive-parts connected to another means of earthing.

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In this unit, you will learn about:

• The dangers that can arise with PME (TN-C-S) supply earthing arrangements
• How the dangers associated with PME relate to EV charging equipment installations.
• Simultaneous contact of the earthed body of a vehicle and exposed- and extraneous-conductive-parts of other earthing systems.
• The BS 7671 requirements relating to simultaneously-accessible exposed-conductive-parts, and the definition of arm’s reach.
• The means of addressing simultaneous contact issues.
This course has been designed for those who are new to EV Charging Installations or for those requiring a better understanding of electric vehicle charging equipment installations. Learners using this course could be from any background or industry sector, from apprentices through to senior managers.
More Information
Level Technical
Partner Details

Director and Principal Consultant at G Kenyon Technology Ltd, Graham has established his reputation designing and implementing control and information management systems in the challenging environments presented by world-class construction programmes in the airport and railway industries.

Graham is well versed in standard-setting, as he serves as: Chair of the IET’s Wiring Regulations Policy Committee; a member CIBSE’s Electrical Services Group Committee; an IET representative on JPEL/64 (BS 7671, IET Wiring Regulations), under which he also serves as Deputy Chair of JPEL/64 sub-committee D. 

Graham is author of the 3rd Edition of the IET Code of Practice for Electric Vehicle Charging Installations, co-author of the IET Code of Practice for Electrical Energy Storage Systems, and editor of some of the IET’s forthcoming Wiring Regulations publications: Guidance Note 5 Protection against electric shock (8th Edition); Guidance Note 6 Protection against overcurrent (8th Edition); and Electrical installation design guide (4th Edition).

Type Unit
Unit details
1 hour
G Kenyon Technology
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