OK you can't leave an extension cord in place over 90 days. So as long as the wire size is OK for the load at that length, can I buy a 20' one, cut the end off and hardwire it in as a 20' power cord? I am talking a motorized screen for in a church. The directions say 14-18 wire. I should be able to pick up a 16-3 cord for less than the wire and a plug.
