text: # How is motor current measured?
  
  Contents
  
  There are essentially three ways to measure current in a motor-control system: high side measurements, low side measurements, and inline measurements.
  
  ## How is current measured in an induction motor?
  
  You can measure the current using a tong tester, or an ammeter. Full Load Current (FLC) is a term used for the maximum current a motor of a given horsepower can draw.
  
  ## How much current does a motor draw?
  
  Calculate the amps used by dividing the wattage by the voltage. For example a 500-watt motor — running on 50 volts — will draw 10 amps. A motor with the same wattage — running on 20 volts — will use 25 amps.
  
  ## What is the full load current of a 1 hp motor?
  
  Full Load Current: Three Phase AC Motors
  
  Motor Horsepower Motor Ampere
  1 230V 460 V 4.2 2.1
  1-1/2 230V 460V 6.0 3.0
  2 230V 460V 6.8 3.4
  3 230V 460V 9.6 4.8
  
  ## How much current would a 1.5 HP 240v motor draw?
  
  The 1.5 HP Baldor motor that turns at 1725 will draw 18 amps according to its name plate.
  
  ## How many amps is a 1 hp motor?
  
  AMP DRAW BASED ON HORSEPOWER
  
  HP 1 Phase Amps
  115 volt 230 volt
  1/2 9.8 4.9
  3/4 13.8 6.9
  1 16 8
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  ## How many ohms is considered a short?
  
  Very low resistance — about 2 ohms or less — indicates a short circuit.
  
  ## How many ohms should a 3 phase motor have?
  
  The reading should be between 0.3 to 2 ohms. If it is 0, there is a short. If it is over 2 ohms or infinite, there is an open. You can also dry the connector and retest to possibly get more accurate results.
  
  ## What is a good megohm reading for a motor?
  
  The rule may be stated: Insulation resistance should be approximately one megohm for each 1,000 volts of operating voltage, with a minimum value of one megohm. For example, a motor rated at 2,400 volts should have a minimum insulation resistance of 2.4 megohms.
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