I have 3-phase power hooked up to my building. I also have solar panels feeding the grid. Most of the power in the building is functioning normally. I tested the phases with a multimeter and got 120 - 125 V per phase.
In the electrical panel for a certain part of the building the phases with the same multimeter are giving me 180 V, 180 V, and 40 V respectively.
I'm hooking up a contactor relay switch that activates a pump, and the 180 V burned out one switch already, so I tried running some wires from a panel where the phases are indicating the normal 120 V, but at the end of the wire I'm getting 180 V in each phase. I can't figure out what could be making the voltage increase or leak from one phase to the other.