In preparation for adding a 3 phase motor and VFD to my PM-932 mill, I opened the control wiring enclosure and examined the wire leads. Other than the obvious diameter differences between the 240 v and 24 v leads, there appears to be no ID info as to gauge on the wiring. There is the manufacturer and the international standards that the wire adheres to and the voltage rating are all marked but no gauge indicators. The smaller and larger diameter wires are marked exactly the same. Am I missing something? The only choice may be to rewire the 240 v circuits with wire of known gauge (and therefore ampacity) before adding the VFD. Although the old and new motors are the same (1.5) hp the VFD will draw more current than the 1 phase motor alone. Worth worrying about? A little frustrated...
Ed
Ed