Wago connectors with too many wires

bit far away for me I'm afraid, and in any case the OP wants the 4 way ones really though the photos do show some sort of stranded conductor and no ferrule.

If in doubt I just link two Wagos together, so for example two 3 port connectors provide 4 usable ports with a port in each being used by the link wire.

Wow, I never expected to stir up this much interest ! But by far the best advice here is surely to ask WAGO.

I'm a retired electrical engineer (which I realise does not make me an electrician) so when I discovered this I went to Toolstation and bought a selcteion of different sizes. The instuctions ("to be sold only with installation instructions") have an IKEA-like reliance on pictures and though it's very clear that stranded cores are not to be used, it really isn't clear that two solid cores shouldn't be pushed into the same way (but it's not easy to do, which should be enough of a clue !).

Interestingly, since my original post I found behind a triple switch (bedroom with spots and main luminaire, plus en-suite light and extractor fan) SIX 1mmsq solids commoned in a 3-way lever-type WAGO. Now the lever-type WAGOs are qualified for stranded conductors, so (on the grounds that 2 solids are equivalent to one stranded, then this must be acceptable. Somehow I still don't think so !! As mapj1 says, the only authoritative answer will come from WAGO, but many thanks for all the opinions here.

The 773's ARE suitable for both solid and stranded, I have a couple of boxes of those:

The boxes are both CLEARLY marked suitable for both solid and stranded.

2273's are a different spec.

I already pointed out the potential confusion with this site, see post above.

Stranded cables can be used but with a ferrule or crimp pin.

The potential for confusion increases when different manufacturers connectors get mixed together in the same storage box.

Branta said:

But by far the best advice here is surely to ask WAGO.

If you do, and get a response you can share, I think we would all be very interested.

Yes, of course.  Right now I am getting very bored with their "hold music" so will probably need to wait for an email reply.  Indeed, I'll suggest they might want to join this discussion !

I agree that the box that you showed is pretty clear that the three way connector is for 3 wires only, but the way I bought them from Toolstation (20 to 40 qty) only the 4-way came in a box with equivalent clarity - 2, 3, 5 way came bagged with a sheet that just wasn't as specific.

Branta said:

SIX 1mmsq solids commoned in a 3-way lever-type WAGO

That may not be as bad as it seems.

The larger size of the newer lever arm Wagos, the 221 accommodates 6 mm² cable. I don't see a lot of difference between 6 x 1 mm² and 7 x 0.86 mm². However, it may not be possible to get the insulation into the tunnels as they should be. (I sometimes have the same problem with wiring accessories: e.g. 2 ends of a ring and a spur may not fit well.)