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.

 

[jerryalan]

I don't believe you will find one. Look over 110.3 and see if you think it applies. I think you will find it is arguable whether that applies, and it might depend on how the instructions are worded.

i've wired all the receptacles in the plant as they should be and the different machines cord end wired as required. if it was a single phase 480 dough dump or some such the cord would have only the two hots and green.

 

[pipe_bender]

i've wired all the receptacles in the plant as they should be and the different machines cord end wired as required. if it was a single phase 480 dough dump or some such the cord would have only the two hots and green.

Thats awesome that you do that but unfortunately not everyone out there is that logical about stuff, apparently some electric car manufacturers are now providing Level-2 240V chargers with a new car that have a molded 4-wire cord cap for a range plug rather than a standard 3-wire welder plug so an extra dead wire 'factory installed' and extra pin in the cord cap.
And it seems to me the factory authorized installer does not pull 2 hots + neutral rather they are just pulling 2-hots and omitting that neutral pin, since its not used.
And my that was part of my original question does that violate the NEC in your opinion?
I just read in another thread that there not be any top end amperage 'limit' just a minimum limit on receptacles either, so could someone wire a 4 wire 50A receptacle on say a 12/2 with a 20A breaker and not violate code?