Thanks for all the replies. There is no 24 volts or 120 volt supply to these units. They are 3 phase 240 volt, but there is a weather proof sub panel next to them with 120 volts. I guess I would have to get a relay with a 240 volt coil and feed off the compressor to this coil, that when the compressor comes on, it would send power to pull this coil and pull it's contactor in, and energise the 120volts that I would have to feed through it, then it would supply the hour meter. It would be simpler if they make a 240 volt hour meter. Any one know if they do?? I pulled up one of the sites, and so far, don't see the information on the voltage. Any suggestions on some more sites?
Thanks Steve.....
