5100
« on: May 11, 2013, 11:28:36 AM »
Would really need to see the other side to see what they are exactly. Even if they are E-Stops they shouldnt really be cutting the mains to everything.
You can have an E-Stop cut mains to drives in some situations, I do on some of my machines but not solely and really the E-Stop switch itself shouldnt do the mains switching, there sould really be an E-Stop string of a lower voltage which may disable a contactor that has the mains on it.
Regarding the 120v, that could be your location, if in the UK the mains are 240v per phase so your single phase mains consist of a live and a neutral. In the USA I think the 220v mains consists of two live lines of 110v each. If yo are in the USA then that will be why you are only getting 110v on the switch as there will just be one live and you will be measuring between it and a neutral or Earth.
Hood