Re: How many amps are you drawing running your CNC___ on single phase?
I can't find a placard on my CNC lathe.
240V, 3 phase, 7.5 KW (10 HP) spindle motor, 0.75 KW hydraulic pump
Test Conditions:
Run from a homebrew 15 HP rotary phase converter
85% spindle load
Hydraulic pump on
Four 1.8 KW Axis servos on, but not moving
Results, single phase feed measured at the input to the RPC disconnect:
239V, panel gauge
14.1 Amps, panel gauge, 13.9 Amps, Fluke true RMS clamp meter
0.68 Power Factor, panel gauge.
So about 3.4 KW apparent power, but including the power factor; about 5 KW or about 20 amps load on the line.
I hope this helps.
Jim Dawson
Sandy, Oregon, USA