Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 23 replies
  • Subscribers 32 subscribers
  • Views 4920 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

13A EV chargers

vantech

Hi, 

I started another post regarding portable EV chargers and it raises the question of 13A portable EV chargers and earthing arrangements. 

These devices are readily available on Amazon and from EV dealerships. The user can plug-in and charge at around 2.3kW from a 13A socket. 

These do not take into account the earthing arrangements, nor do they appear to have PEN fault detection in them (unless this isn’t publicised). 

Are they exempt from the regulations because they are “temporary“ and covered by a product standard? 

Appreciate there is guidance on EV charging and outlets destine for this use, however this doesn’t take into account the vast majority of users of these plug them in anywhere they like, for instance when they go on holiday. 

Thoughts? 

Parents
  • 0

    The transformer in a traditional 12V battery charger is an iron cored thing running at 50Hz, and there is full isolation primary secondary, the new ones are double insulated.

    The EV charging lead provides no such isolation - it is just a set of relay contacts  arranged to allow mains to reach the car or not depending on some signalling between it and the car. 

     

    The actual charger - the bit that takes mains on one side and has the battery on the other, is built into the car, and is neither class 2 nor is the secondary side earth isolated.

    Mike.

Reply
  • 0

    The transformer in a traditional 12V battery charger is an iron cored thing running at 50Hz, and there is full isolation primary secondary, the new ones are double insulated.

    The EV charging lead provides no such isolation - it is just a set of relay contacts  arranged to allow mains to reach the car or not depending on some signalling between it and the car. 

     

    The actual charger - the bit that takes mains on one side and has the battery on the other, is built into the car, and is neither class 2 nor is the secondary side earth isolated.

    Mike.

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines