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 8 replies
  • Subscribers 36 subscribers
  • Views 2122 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

EV charger on outside of wooden detached outbuilding

Alan B

Hi

I am being asked to quote for installing a domestic EV charger on the outside of a detached outbuilding that's constructed of wood. the charger is constructed of plastic.

The building is 20 or 30m from the house is 20 or so meters from the house so no risk of fire spreading to a dwelling.

The SWA from house to DB in the building is protected by an MCB and my plan is to use a metal DB in the building with RCBO's for each circuit which will help reduce the risk of fire to some extent.

Looking through BS7671 and guidance note 4 I can't find any rules requiring me to mount the charger on a non flammable surface but not sure I am comfortable with it.

The charger won't get hot under normal conditions but given it's carrying quite a lot of current presumably there is a chance that a fault could cause fire.

I am wondering if there are rules I have missed, if others would take any precautions and what they are.

I have looked at fibre cement board which could be a solution for internal mounting but I think the charger would be better outside and I don't see the customer accepting fibre cement board being visible outside.

Parents
  • 0

    The next thing is that all those sweaty 60A fuses will be savedf by first the  unexpected volt drops in the street cables, and then transformers overheating and the substation secondary side fuses.

    If you have a neighbourhood typical for round here with a 500kVA transformer feeding upto 70 houses per phase and the odd 3 phase supply to the larger parade of shops, then its everything all the way back that is sized on a low demand per house when averaged over more than a few hours. The substation fuses will aslo limit matters

Reply
  • 0

    The next thing is that all those sweaty 60A fuses will be savedf by first the  unexpected volt drops in the street cables, and then transformers overheating and the substation secondary side fuses.

    If you have a neighbourhood typical for round here with a 500kVA transformer feeding upto 70 houses per phase and the odd 3 phase supply to the larger parade of shops, then its everything all the way back that is sized on a low demand per house when averaged over more than a few hours. The substation fuses will aslo limit matters

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