"Chris Friesen" wrote in message
...
Lew Hodgett wrote:
Toller wrote:

Geez no; you can get 3hp on a 20a circuit and 5hp on a 30a circuit.

One horse is roughly 1200w.

Don't give up your day job to go into the electrical business.

Those numbers aren't all that bad. The amerages are reasonable numbers
for a 240V motor, as long as the breakers protecting the wires are sized
for the startup load.

The wattage number is a bit wonky, though still in the ballpark.

1HP is 746 watts, plus power factor correction, plus efficiency
correction.

1200w is 10a at 120v. A 1hp motor is typically 10a, 1.5hp 15a, ans 2hp 20a.
Then, going into 240v, a 3hp is 15a. The wattage number isn't the least bit
wonky. Now some motors are more or less efficient; my 2hp TS motor only
draws 17a, but it was 50% more expensive than the same manufacturer's 20a
2hp motor.