The electrician who wired my (new) home takes the live feed to a light switch in each room (rather than to the rose). Thus each room has a light switch back box with four neutrals commoned in a WAGO 2273 connector (feed in, feed onward, wiring to luminaire, wiring to spots). I'm guessing the spots were a surprise to him as he seems only to have had a stock of 3-way WAGO connectors. He's consistently managed to wedge four 1mmsq wires into a 3-way WAGO 2273.
I know this is wrong, the "extra" wire just can't be clamped like the WAGO design intended. What is driving me nuts is that nowhere can I find it written down that it is wrong !
