davidb
May 2, 2018, 02:13 PM
The full load current for a single phase alternating current 115 volt, 1 horsepower motor is?
My answer was 8 Amps based on formula when Horsepower & Voltage are known factors.
Horsepower X 746
Amps = _________________________
Volts X Efficiency X Power Factor
Correct answer indicates 16 Amps based on NEC Table 430.248.
Do we need to remember numerous Tables or need to know how to calculate such questions?
Thank-you
My answer was 8 Amps based on formula when Horsepower & Voltage are known factors.
Horsepower X 746
Amps = _________________________
Volts X Efficiency X Power Factor
Correct answer indicates 16 Amps based on NEC Table 430.248.
Do we need to remember numerous Tables or need to know how to calculate such questions?
Thank-you