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  1. SR8CReliant

    breaker sizing, 220V 1 Ph

    My bad. I'm an ME, so need to be "schooled" on this EE stuff. I have a converter for the mill, it has a round motor-like device with it. Not a VSD (VFD). The lathe has a 2 speed wired for 220 (230? 210? 240?) at 1800 rpm. It does not use a VSD (VFD), it changes speed by gearbox sequencing...
  2. SR8CReliant

    breaker sizing, 220V 1 Ph

    The mill already has an inverter, thank goodness. The lathe needs one (3 HP) now. There are little coolant pumps and DRO things to wire up, they are 110. No controllers, these are simple machines.
  3. SR8CReliant

    breaker sizing, 220V 1 Ph

    I just got a lathe and a mill. The lathe uses 220 V 3 Ph, and the mill uses 480 3 Ph. All I have is 220 1 Ph coming into the building so I know I must buy inverters to make each machine run. However, the lathe motor has 7.6 FLA and the mill motor has 1.65 FLA. When the 220 1 Ph breaker panel...

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