How To Work Out Amp Draw. Then place a V for volts at one of the bottom corners and an A for amps at the remaining corner. For example if your portable guitar amplifier is drawing a steady 20 amps and you want it to last 1 hour you would start out with Step 1.
You have a 230 volt colour TV that doesnt have a watts rating but does give an amps rating. For 3 phase power supply. The voltage V in volts V is equal to the current I in amps A times the resistance R in ohms Ω.
I dont know the voltage where you are but if you have 220 volts 3 to 4 amps is almost right as a guess but that will depend a lot on the particular amp used.
100w 12v 83a. For 3 phase power supply. This video demonstrates the circuit steps etc involved in determining the amount of current smaller brushed DC motors draw during no load load and stal. When Dave connects incandescent bulbs to an amp meter they draw up to 16 amps but when LED lights are used they only pull about 26 amps.
