I know its a late resoponse, but Quinetic have recently introduced their QU RFT which, along with their QU A313 receiver will do exactly what you suggest.
Available from TLC: Quinetic RF Transmitter | Quinetic (QURFT) - https://www.tlc-direct.co.uk/Products/QURFT.html
I stand corrected.
This has changed in the last year or so - previously Myenergi stated their RCDs were compliant. I double-checked with them on more than one occasion. (I also checked with NICEIC if a "Type-A + 6mA DC" met the requirements - and they said YES!) :(
If you do run a wire in a legal, but unexpected direction, I always feel happier if it is inside a piece of steel conduit (connected to Earth via the socket back box). Just in case it ever meets a power drill!
(I would also suggest terminating the other (open) end of the tube in a plastic...
I would be inclined to chase-in a small duct (you can get 12mm or 15mm flexible, on-line) but (as far as I am aware) there is nothing to stop you plastering-in a PVC cable - just make sure it is in the approved zones, big enough for the job - dependent upon length - and it goes to the right...
I've done this with 2 Zappis (the customer already had one and wanted another).
I upgraded the existing SWA supply cable's MCB as far as I could (45A I vaguely remember) and installed a small outdoor consumer unit (each charge point MUST have its own over-current protection) with Main switch and...
The Zappi actually requires no RCD upstream (as it has internal Type A + 30mA DC). So - if your supply cable is compliant (SWA/protected/not concealed) you could just use an MCB (32A for a Zappi, but you DO need a 2-pole isolator switch in-circuit).
In a TN system, hopefully, Zs will be within limits. In a TT system, the Zs will be higher than permitted, so you have 2 choices: Either fit a (Type A) 100mA RCD upstream (the Zappi claims it has "Type A + 30mA DC" RCD protection, so Type A (just) complies with the same-type RCD rules), and...
As others have said, if you are using RCBOs you dont normally also want an RCCB - as that would be cascading RCDs. Also, if the cable is armoured all the way, you dont need an RCD on the Distribution circuit(s), just an MCB - in which case, I would be inclined to run just one 10mm SWA (@ 50A)...
WHAT EV Charger? That "Armoured cable" most likely includes a CAT 5 or control pair of signal wires as well as mains (depending on the charge point). So beware of that.
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