hi. thanks for replies. I have got power to the spindle using the power unit that came with the spindle as per pic. but I can only get it to work when it is the only item in the power change. I have tried to power it from the machines mains input socket but know joy. it will only work if its the only unit. I am not great with elecs and I was hoping to just have the one mains plug socket to the machine. is there something I am missing here. I am only using live and natural feeds to the spindle power unit as there are only two inputs. the machine also as earth connected at the mains input. do you think that if I fitted a terminal block from the machines mains input socket and then to the two cnc driver power units and also the spindle power supply unit it would work.