I think it was in one of the regular emails I get as a member but can't now remember which of the many it was.
I was rather surprised as to me it would be dependent on where the car was parked. My first thought was if it was garaged within the house then why would it need TT.
However reading the problems with Dell computers and the Dream Liner aircraft to put a car on charge inside a integral garage would not be a good idea. Even my AA batteries one went wrong and melted the bay in the charger. Seems the NiMH battery still has some way to go. With a car not bought but hired.
If I find the notice I will return to say where it came from but two desk tops have gone down in last month so lost a load of emails. Seems book is £35 so I will not be buying.
Description
Also available as an e-book
Published January 2012
This Code of Practice aims to provide expert guidance on EV charging equipment installation, an important emerging area which is not covered in detail by the current edition of the Wiring Regulations (BS 7671) or the IET’s Guidance Notes.
Aimed at experienced electricians interested in understanding a wide range of equipment and systems available, it covers the specialised installation requirements of electric vehicle charging equipment in public, private and commercial locations.
The Code of Practice provides detailed on-site guidance and recommendations on all aspects of the installation from the origin of the electrical supply, through distribution and final circuits, installation of the charging equipment itself to the cable between the charging equipment and vehicle's electrical inlet. Also included are related issues of site layout and planning and subsequent inspection, testing, certification and maintenance of installations.
Exclusive guidance on latest electrical requirements
The Code of Practice includes an overview of all types of equipment, connectors and cables that an installer is likely to encounter and provides detailed references to all relevant standards and regulatory requirements in the UK – including, in Section 5, the latest guidance based on advice from the HSE on:
When to use TT earthing
Special precautions for connecting to TN-C-S (PME supplies)
The use of electrical separation, isolating transformers and RCDs
The need for a separate, dedicated electrical circuit for EV charging.
Written by industry experts
This authoritative and timely document has been developed by a committee of experts representing the key players across the EV industry:
British Electrotechnical and Allied Manufacturers Association (BEAMA)
Charging equipment manufacturers: Chargemaster, Elektromotive, Pod-Point
Electrical contractors: ECA, SELECT
Electrical Safety Council
Energy Networks Association
Energy Retail Association members: Centrica, EDF, E.ON, RWE Npower, Scottish Power, Scottish & Southern Energy
Energy Technologies Institute (ETI)
Government: OLEV, HSE, DCLG
Plugged-In Places scheme members: Charge Your Car (North), Source East, Source London
Society of Motor Manufacturers and Traders (SMMT)
The IET’s Technical Regulations team
Book readership
This is a hands-on guide of immediate practical use to trained installers. The Code will also be invaluable to administrators and managers specifying and procuring EV charging equipment and contractors. Finally, it will be essential reference for manufacturers of cars and charging equipment who need guidance on how to meet the requirements of electrical supply and installation standards.
Book contents
Scope
Overview of electric vehicle charging equipment
Charging equipment for Modes 1, 2, 3 & 4
Socket outlets and charging cables
Other variations in EV charging equipment design and specification
Arrangements prior to installation commencement
Supply metering
Adequacy of supply
Existing earthing arrangements
Simultaneous contact assessment
GPRS coverage
Charging equipment manufacturer’s instructions and requirements
Planning permission
Traffic management orders
Agreeing installation details with client
Physical installation requirements
Potentially explosive atmospheres
Location of charging equipment relative to parking space
Protection against vehicle impact
Location of controls and socket outlets
Free space around charging equipment
Ventilation and cooling
Avoidance of trip hazards
Avoidance of unnecessary obstruction
Labelling of BS 1363 socket outlets
Electrical requirements – General
Earthing and protective equipotential bonding requirements
Circuit design, cable specifications and dimensions
Protection against electric shock
Provision of RCDs
Isolation and switching
IP ratings
Lightning protection systems
Electrical requirements – Domestic installations
Electrical requirements – On street installations
Electrical requirements – Commercial and industrial installations
Inspection, testing and maintenance requirements
DNO notification
Annexes
A – Charging connectors and charging cable types
B – Example of DNO notification form
C – Checklists for domestic installations
D – Checklists for on-street installations
E – Checklists for commercial and industrial installations
F – Glossary
G – List of figures and tables
H – References
You can also purchase or get further information by contacting IET Standards on +44 (0)1438 767684 or Fax: +44 (0)1438 765563.
See also
http://www.installeronline.co.uk/wp-content/uploads/2013/01/Charging-ahead.pdf
It is interesting reading but not the report I read to start with. Clearly the earthing method is complex and until I have to I have no intention of buying the guide.