EV charger on outside of wooden detached outbuilding

We've a long history of mounting all sorts of things on wooden surfaces - from pine clad ceilings to timber wall paneling to joint boxes in floor voids, even (in older days and possibly not technically correctly) open backed CUs on softwood boards - without any major problems. I'd assume the charge point plastic case will be of the usual electrical grade plastic that's at least meant to be survive a glow-wire test, so to be honest I wouldn't be too worried about it.

   - Andy.

seconded - there are no high power parts in the charger - it is just a contactor and some electronics to turn it on and off as required.

Unless the charger instructions say 'do not mount on flammable surface' then it is safe to assume you can, and it will be fine.

Now, how is the earthing being organised ?

Thanks for confirming I am ok for fire risk. Regarding earthing. I ran out of time to check earthing during the visit as the customer had to go out. I suspect that currently the TNCS earth is extended to the garage. Which is ok for the charger as it's got open pen detection, I didn't see any sockets or any other accessory close to the front of the building for use outside or any extraneous conductive parts entering the building. There is a good chance I missed something and may therefore may need to convert it to a TT island. It's not a big deal and I carry earth rods etc on the van.

I think the manufacturers have, for the most part, sorted the open PEN issue such that the risk is now at a tolerable level. Should be as simple as fitting a shower! 
All the fuss about shock has dissipated but I was always more concerned about fire than shock. The COP has loads of pages devoted to open PEN concerns but really little to say about the fire risk.

Likely with the withdrawal of the grant for the private domestic sector we will have all sorts of uncontrolled installations driven by cost to the lowest levels of concern for safety. Packed plastic consumer units buried under a pile of tat under the stairs with a charge point squeezed in for good measure! Open PEN, bah by comparison!

I also foresee a lot of cooked 60 amp cut outs and service cables.

Until recently it was generally accepted that a 32 amp EV charger  could not be installed on a 60 amp service, unless the rest of the installation had an improbably low demand.

Now however EV chargers are available that monitor the total current drawn from the supply, and throttle back the charging rate to avoid overloading the supply. 

In a home with a 60 amp supply and other significant loads such as cooking and space heating, that could result in a 60 amp service being loaded to 60 amps for hours at a time.

I suspect that a lot of cut outs and the cable thereto were designed/selected on the basis that no one would actually USE 60 amps other than briefly.

To compound this, certainly in my area the DNO is completely unresponsive to requests for fuse ratings and upgrade requests, more or less forcing the chargers to be installed on whatever fuse is there and setting the household load limit to 60A.

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

So where does this take us. The MD issue in the property is mostly solved by CTs set so that maximum import capacity is not exceeded. That does not solve the ever increasing loads on the DNO transformers. 
Most new EV chargers are allegedly “smart”, however, with such a variety of back office protocols in place, is it likely that this could facilitate a load control mechanism?