350VA inrush on a 120VAC line.
350 / 108 (assume 10% reduction) = 3.2 amps
trace length is just under 1 inch.
assuming a 10% higher draw, would put me at about 3.5 amp.
different calculators show different results, the one offers that my 3mm wide, 2oz copper trace would handle about 4.4 amps.bout 20% over my estimated needs.
as we know, most things don't fail within the expected zones, but when a series of events pushes them outside of the expected parameters.
couple years ago, I had to put in some 200 amp 3 phase transformers to handle a continuous brown out condition in Brooklyn for HVAC equipment. too far down the line from con edison generating facility. the trick was to handle the low side so as to not burn up the motors and to handle the high side in the event power did come up to full voltage.
IIRC, we dipped into the low 180's on the 208 line and saw 205 as the peak. when you do your homework, and actually solve the problem, it fades from memory and never comes back to bite you.
I am not a big fan of putting 120 volts AC on a pcb with an Arduino.