If I was to have a car charging point installed it would make sense for it to be located in/on my garage rather than the wall of my house.

I already have a garage CU fed by a 32A MCB in the CU in the house and underground SWA cable.

One web site says..

Quote:


I'm aware I will have to physically check the cable size/cross section and length etc but cant do that at the moment.  

I think the current distance is around 25-30m (House CU to Garage CU) but it would be more like 35-40m from the house CU to charging point.

Online calculators suggest the existing cable to the garage is probably 6sqmm but might be 10sqmm if I'm lucky.
 
Am I correct in assuming that if it's 10sqmm I'll probably be OK but it's 6sqmm it will be marginal or need upgrading?  

There are several 13A sockets and lights in the garage but not currently used for anything significant. However part of the garage would be ideal as a workshop so might get used for more in the future.

Ok so it looks like I will be upgrading the cable if it's currently 6sqmm but might get away with it if it's 10mm already.