someone keeps the test button pressed for an appreciable period of time
The time the button was pressed with the efixx demo was not excessive. Had it not been during a test, I would have said it was simply a component failure, but it was clear all due to test button being pressed during the reverse flow.
If it was not for plug and play solar, I would say there is no risk. As to get reverse flow, it needs a battery or similar be it EV or solar, and so unless supplying EV or solar the bidirectional is not required.
But with plug and play, anyone could fit it into any 13 amp socket, I know the rules say "Plugs shall not be used for the connection of electrical power generators to socket-outlets." under BS1363-1, but the devices are still being sold in the UK, and we know they are being used, as there are YouTube videos showing it being done.
So with owner occupied homes there is no reason for Plug and Play, it is easy enough to make a proper connection into the system, but with rental we have little or no control of what the tenant may plug in. So there is a potential danger, it seems it did not burst into flames or anything like that, all it did was remove the RCD protection, so unless no RCD protection will attract a code C2 then omnidirectional RCD/RCBO should not either.
So suppose the question is will a lack of RCD protection mean a code C2? If not, then neither will an omnidirectional RCD/RCBO, if yes, then also an omnidirectional RCD/RCBO should attract a C2 code.
Nice one Ed. Bet he did not consider that before his anouncement? But Omar Khayyám in the 11th century worked out, once done, all thy Piety nor Wit, Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.
So he would need to at least make a public announcement sorry I got it wrong, we can't have plug and play solar, and fast before too many are sold.
