Hi Gary, I'm fairly certain the answer is yes they can, but I'm also fairly certain that in order to keep the warranty valid Shunyata would require that it re-terminate the power cord. I once asked a Shunyata dealer whether I could get a Sigma NR PC half as long as the standard length. His answer was "yes", but it would cost the same as the standard length. Shunyata offers a 20A to 15A female end adapter, which I ordered about a week ago. I have been told that production is 2-3 weeks behind, so I haven't received it yet. -Regards
Al
Al