Amp draw chart. V volts x a amps watts ohms law awv vwa to determine amps consumed by a 25watt 12v light bulb for example use the equation awv or 251221amps. Because the amperage draw is low other small household appliances can use the same socket as the air conditioner. Electric water heater 6 gallon 1000 1500. Air conditioner each 1400 2000.
From table 430 150 they draw 40 amps 14 amps and 3 amps respectively. You can determine power characteristics of an appliance if watts rating is not provided by the following equation. Three pumps of a pump station 30 10 and 1 horsepower are connected to the power source of 460 volts 3 phase. Copper wire max current.
Small room size air conditioners generally in the 5000 to 6000 btu range will draw between 5 and 7 amps of power. Amps 1 hp 746 w 9 120 v amps 746 9 120. Aluminum wire max current. The current i in amps a is equal to the power p in watts w divided by the voltage v in volts v.
I a p w pf v v. The figure we would plug into the calculator would be. We also show the most. I a p w v v ac single phase watts to amps calculation.
Lighting circuits may be designed for only 15 amps. Amps hp 746 efficiency v for example lets find the current draw in amps of a 1 horsepower motor that runs at 120 volts with a 90 efficiency. To calculate the load requirement for a circuit first add up the wattage of all the electrical devices that will be on the circuit. Load range watts average load watts amps.
Wire size awg. If your wire run is over 300ft you will need to consider voltage drop in your circuit. With this calculator you can convert online from hp to amps or amperes to hp automatically easily quickly and free. Select the correct chart for fuse being tested mini maxi standard cartridge find the column matching the amp reading being tested.
In most cases these are plugged into a wall socket that is serviced by a 15 amp breaker. Then divide the total wattage by the voltage of the system typically 120 or 240 and that will give you the required current or amps. For ease we explain how to convert from hp to amps in only 3 step that the formula is used for the calculation some examples and a table with the main conversions of hp to amps. What size wire you need to use for the current draw you need.
If the circuit is likely to draw 15 amps you will need to install a 20 amp circuit. Find the row matching milivolt number matching meter reading where the row and column intersect is the number that will be your circuits current draw in miliamps image below click on these links to download fuse charts.