maybe maybe not
are you usa based?
will you use 120 volts? you will melt an 18 awg wire
will you use 240 volts? you may not melt an 18 awg wire
a 14 awg wire is dead solid zero issues
with 120 volts
or with 240 volts.
I never bother with 18 awg wires
and if it was up to me I would shut that link down since I know some will try to run that psu on 120 watts and melt the wire
buy these instead
https://www.ebay.com/itm/Monoprice-6ft-14AWG-Power-Cord-Cable-w-3-Conductor-PC-Power-Socket-C13-5-15P/371946508242?good company good price