25m 3 pin EV charging cable

As it says on the tin...

I have a use case for this and maybe upto 30m 3 pin mode 2 EV charger cables...

Anyone know where or how I might procure them?

Hmm I think these are 3 - 10m max. drawing the full 3kw over a lead/extension can't be good. Especially considering how long it would take to charge an EV that way.

While more expensive is there no option for a socket to be installed closer? External one? External one on a post?

I don’t have one, but have heard good things on other forums about Tough Leads. They have EV specific outdoors extension cables up to 25m.

https://toughleads.co.uk/collections/ev-electric-vehicle-extension-leads/products/ev-extension-lead

dcsh I use a variety of cables and plugs etc from Tough Leads and they are top notch. Maybe the OP could call them if they need a "special" making up.

What ever it is you get, will need over sizing at least 1 or 2 sizes

I use the toolstation extension lead. Works perfectly as long as you unreel all the cable.

https://www.toolstation.com/masterplug-2-socket-13a-ip54-rated-cable-reel/p50173

Extension leads are sized to be used in uncoiled state for adequate heat dissipation

https://electronics.stackexchange.com/questions/192923/why-is-it-dangerous-use-a-coiled-extension-cord

I have a 15m lead from toughleads (with the optional inline RCD protection), and have used it successfully a number of times when away from home.

No matter how good the lead, there are shortcomings of any system that uses the UK style 13 Amp plug and socket. In theory the 13 Amp plug/socket arrangement should support up to 10 Amps continuous (nominally 2.3 kW), but I have found that the plug/socket starts to get pretty warm/hot when operated at 10 Amps for hours on end.

One rental cottage I visited had a burnt-out 13 Amp socket, caused by a previous visitor with an EV who presumably plugged in to charge at the full 10 Amps and left for a long period. Not surprisingly the rental owner now has a strict policy of no EV/PHEV charging, even by someone with electrical competence prepared to run at the reduced 6 Amps.

Remember there are 2 x 13 A plug/sockets in line, 1 in the house, then 1 close to the EV where the EV specific cable is plugged in.

The PHEV I have charged has a setting for a reduced charge rate, which then runs at 6 Amps (nominally 1.4 kW) which significantly reduces the heating effect in the plug/socket (6x6/10x10 = 36%). An 11 kWh PHEV battery then takes around 7-8 hours for a full charge, and I would not recommend this overnight or unattended due to the overheating risk. I have seen reports that charging at 1.4 kW is not very efficient, due to the EV electronics drawing 200-300 W in order to manage the charging process. At higher charge rates this 200-300 W becomes less significant as a proportion (less %age loss).

If the house socket is in a known healthy state, and regularly tested/checked by an electrically competent person, then this may be a usable solution at home, but there is good reason to be using a proper EV charge-point with 32 Amp rated wiring and CCS plug/sockets along with specific RCD protection.

Even if all was available was a 13A socket from the ring main, I would be replacing the socket with a 16A commando instead.
The same on the lead. That way at least the heating of the terminals is much reduced, due to the increased contact area of a 16A plug vs standard UK 13A

TheDragon (GivEnergy) Defintiely. This is a no brainer. It's just not worth the risk which is very real.