aribert
Cast Iron
- Joined
- Jul 2, 2008
- Location
- Metro Detroit, MI
I have a Summit 14 lathe on a static phase converter. A a local auction there is a 10 hp Phase-a-matic, auction closing in a couple of days. Trying to understand if it might work with my lathe and my limited power.
Background: Right now I am limited by a 30A breaker at the subpannel (30A is self imposed, 8 ga wire in underground conduit from main panel 40 ft away). The lathe has a 5.5kW (7.4hp) 2-speed motor. With the static converter and the 30A breaker, I am unable to use the highest lathe speed (1800 rpm) with the motor in high speed (breaker trips after about 10 sec, peak inrush of 94A). I could go with a 40A breaker at the subpannel but I want to be certain that I do not trip the breaker at the main panel - rental house, no access if tenant is not home.
Might I be able to use the 10 hp RPC to drive a 7.4 hp lathe? In this recent thread there is discussion of tuning/balancing the load with capacitor(s): Phase converter sizing
Am I close enough to do the same? I have no knowledge on how one might do this, have access to a digital clamp-on Amprobe.
Background: Right now I am limited by a 30A breaker at the subpannel (30A is self imposed, 8 ga wire in underground conduit from main panel 40 ft away). The lathe has a 5.5kW (7.4hp) 2-speed motor. With the static converter and the 30A breaker, I am unable to use the highest lathe speed (1800 rpm) with the motor in high speed (breaker trips after about 10 sec, peak inrush of 94A). I could go with a 40A breaker at the subpannel but I want to be certain that I do not trip the breaker at the main panel - rental house, no access if tenant is not home.
Might I be able to use the 10 hp RPC to drive a 7.4 hp lathe? In this recent thread there is discussion of tuning/balancing the load with capacitor(s): Phase converter sizing
Am I close enough to do the same? I have no knowledge on how one might do this, have access to a digital clamp-on Amprobe.