10/4/2023 0 Comments 50 kw to ampFor direct current (DC) the electric current flows only in one direction. The labels ‘AC’ and ‘DC’ are used to describe the types of current flow in a circuit. In terms of the hosepipe example, this would refer to the amount of water being released. The higher the wattage is, the more power and output from the appliance. WattsĪmps multiplied by Volts equals Watts, which is the measurement used to determine the amount of energy. In keeping with the earlier example, you could think of volts as the water pressure in the hosepipe, which makes the water flow. Volts are the measurement used to determine how much force is needed to cause the electric current to flow. The more water flowing through the hosepipe, the stronger the current is. You should think of electric current as the flow of water through a hosepipe. Watts / Volts = AmpsĪmps measure the flow of electricity as an electric current. Watts to Amps FormulaĪlternatively to using the calculator, here are some basic equations which allow you to calculate the missing information on your own. We can also rewrite the outcome using scientific notation, P = 8.8×10⁻² hp.Find out how to convert Amps to Watts here or how to calculate Ohm's Law here. Rearrange the formula of hp to amps for the three-phase line-to-line system P = I × √3 × V × PF × η / 746.Īpply the values (we can approximate the square root of 3 as 1.73), P = 0.5 × 1.73 × 100 × 0.8 × 95% / 746. What is the motor's nominal power if it runs with the applied three-phase line-to-line voltage of 100 V, the flowing current equals 0.5 A, while the efficiency and power factor are 95% and 0.8, respectively? Let's see how to solve it: You can also use our tool as an amp to hp calculator. In this case, a 1 hp motor to amps gives 4.505 A. We round the outcome to four significant figures. Make a fraction of these numbers and find the final horsepower to amps value, 746 / 165.6 = 4.505 A. You can always convert a decimal to percent to make your life easier ( 90% = 0.9). Let's work out the result step by step using the appropriate horsepower to amps formula:Įstimate the power in watts (the nominator of the expression), 1 hp × 746 = 746 W.Įvaluate the product in the denominator, 200 V × 0.92 × 90% = 165.6 V. The engine's efficiency is 90%, while the power factor is 0.92. The engine's designed power is 1 hp, and it works with a voltage equal to 200 V. Let's say we want to find the current flow in an AC single-phase motor. You can find a more detailed description with examples in Omni's power factor calculator. The resistive-only loads result in values close to unity. PF is the power factor that tells us about the nature of the source. We can distinguish three different cases: The hp to amps calculations change a little for alternating current (AC). However, using our hp to amps calculator, you don't need to bother about unit conversion at all, as the tool converts between units automatically, so simply choose the one you work with! Here we are assuming you're using electrical horsepower (for mechanical horsepower, the factor is circa 745.7). A rule of thumb states that you should multiply the power in hp by 746 to get the power in watts. Knowing that we can write the hp to amps formula for direct current (DC) as:Īs the SI unit of power is the watt, it's common to use power converter before estimating the amperage. However, it changes a bit in real-life applications, as any power engine works with a certain efficiency, η. According to Ohm's law, the output current I is a ratio of the power P and the output voltage V.
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