Hi Windadct, thanks for your reply. The situation is like this. We have a normal 3 phase installation with 3 single phase Kwh meters. All are connected correctly IE line and load tails are correctly oriented at the meter connections. The meters all turn in the correct direction when normal...
When a single phase 415 / 480 volt load is connected, one Kw/h meter will turn in the right direction whilst the other will turn in the reverse direction. This is the case whether the load is a welder or flood light or inductive heater. Can anybody please explain the reason why?