110 is closer to the voltage on the wire 120 is the rating that the components will operate safely at
Hence 110 outlets or 220 plug in. But ratings are 120 and 240 volts
Really want to jack with someone mention 180 wild leg or 208 circuits !
just don't get your 110/120 relay on the wild leg , it makes for a short life of the relay
had some deep fryers at the church they made it about 2-3 fish fries before we realized some outlets were wired with the hot/wild in the wrong leg
they call 180 , 177 at some of the places I do work they want to know if your equipment can run 177 because they always seem to have extra space in the 177 rack