The basic kit... 
Just about to be boxed to a customer...

#3 "NEMA' A-C power cord plug, by Marinco®
#4 'IEC' 15 AMP A-C power cord connector, by Marinco®
... And best of all,
It is affordable and works very well.
...carefully trim back the jacket with a razor blade or very sharp
knife encircling the jacket but don't cut the inner insulations of the
inner conductors.
Note the jacket cuts easily, do not cut all of the way through the outer jacket...
. After the outer jacket is removed, it slides off easy...
.
NEMA end inserted...
. Note that the wires are pre bent to fit with ease... Easy to do.