16 gauge solid core vs 14 gauge solid core (and Wago connectors)

[GeeTwo]

I doubt that you would be ruled non-compliant for too large a wire by the inspectors. It's certainly not on the checklist.

That said, if you're having real difficulty shoving the wire into the WAGO, that's probably a practical issue somewhere down the road - either this year, when you don't get as much contact as you should, or down the road when the "springs" in the WAGOs have experienced an inelastic shift.

Further, from a practical standpoint, our team has moved each year towards having a greater percentage of stranded vs solid wire on our robot. While stranded does not make those nice, neat right angle turns that IBE members want to see, stranded is much more amenable to continued functioning if the two ends move relative to one another, as happens all too often in robotics. In utterly practical terms, if you buy wire locally, get it from NAPA or Auto Zone or O'Reilly's or Pep Boys, not Home Depot or Lowe's. (though we do buy a lot of frame stock and miscellaneous hardware from both HD and Lowes, including some critical sensor mountings!)