- Joined
- Feb 8, 2014
- Messages
- 11,144
I have four ac electric motors and none of them are close to the w/v=a formula, even allowing for 81% efficiency.
examples from the motor data plates, all at 115v
- 1/3hp @ 5a
- 1/3hp @ 9a
- 3/4hp @ 10a
- 1hp @ 12a
using the power formula and adding for 81% efficiency they should be, respectively
- 2.68a
- 2.68a
- 6.05a
- 8.05a
why such variation from the theoretical and difference between the two 1/3 hp motors?
I'm guessing that the 9a motor is a slow speed motor, maybe in the 900 RPM range?