Can I safely chain lower rated receptacles from higher ones?
I was just looking into a related question and am on the NEC Article that does not allow you to chain a lower rated amperage receptacle from a higher rated one. NEC Table 210.21(B)(3) and its corresponding Article. States that if you have a 50A circuit then the device must also be rated 50A. In theory from a Code standpoint you could install a NEMA 6-15 on your circuit if you could find one that was rated to withstand 50A. 

Good luck with that one.