Does code require all the pins on a receptacle to be used?

[jim dungar]

I find that with stranded wire, a few days later, the wire has rearranged itself, and
what seemed tight may not be.

If the connection was designed for that stranding of wire, its torque rating takes into account the 'relaxation' of the strands.

This movement is also one reason fine stranded conductors are not to be used with most lugs.

 

[NoahsArc]

I usually do the tighten-untighten-wiggle-tighten routine a few times on these sorts of connections then torque down likely a bit beyond spec.

Then have to twist and cram it into a box and hope it doesn't cause any issues.

The quick connect type terminals in hardwire units are undeniably better.

I wish I could use a 3.5" deep box for 1450s but then there's a hard thermocouple and zero insulation on whats usually an exterior wall.

Also had a wago pop off the other day (typ 15a duplex, not 1450 obv). Didn't tape it. Always tape those.