On Sun, 2 Aug 2020 17:30:06 -0700 (PDT), Sid
wrote:

Can a NIMA 14-50 receptacle be wired up with #10 wire ?
What if you doubled up each wire ?

Would that meet code ?
what if you found one wired up that way ?

Any help appreciated.
Thanks

Short answer no, on a couple of different counts.