and a daft one for you, many TP sectional door motors come with a 16a 5 pin plug... the socket for it now requires RCD protection (even thoughts its up a height) yet if its changed to an isolator then its fine...
And quite a lot of the door companies don't like you to change to an isolator, I think its quite a common thing for it to be written into their SOP that the fitter must pull the plug before working on the roller and having an isolator messes them up as they then have to carry a lock off and prove that the isolator has disconnected what they think it has.
I think perhaps we need a variation on the interlcoked socket, and a regs revision to accomodate it, where the plug is concealed behind a screwed door, so switch off, undue two no.2 pozi screws then you can disconnect.
Maybe it just needs a regs change on its own.... if the socket requires a key or tool to access then we shouldn't have to provide RCD protection