How to convert Hp to Amp AC 3 phases in only 3 step: Step 1: Multiply Hp (Horsepower) by 746.

V (V) = P (W) / I (A). V L-N =Volts Line-Neutral. E f =Efficiency. V L-L =Volts Line-Line. The size of the wire also depends on amperage.
Because a double-pole breaker consists of a pair of single-pole breakers, you need two free adjacent slots on your panel to accommodate it. The different numbers are a reflection of the fact that the electricity that comes in from the power line, which is at 240 volts, experiences a voltage drop in the panel and the household circuitry because of resistance and other factors. By creating an account you agree to the Hunker, The Home Depot: How to Install Circuit Breaker.

He worked as an expert consultant with eHow Now and Pro Referral -- a Home Depot site. Stoves typically require 50 amps, while air conditioners may draw only 30 amps. A 230-volt breaker is therefore simply a conventional two-pole breaker. Installing one is simple, but it involves working in your main electrical panel, which is hazardous. P.F=Power factor. The amount of power you draw from one leg in the panel should be roughly equal to the power you draw from the other one. If you have two slots that aren't adjacent, you may be able to change the position of one of the existing breakers. The convention of using watts, amps, and volts. The only one different in the list is 208v. 230 volts motor - 3-phase : 2.5 amps/hp; 460 volts motor - 3-phase : 1.25 amps/hp; Always check nameplate information before designing protective devices, wiring and switch gear. V L-L =Voltage line to line. Hunker may earn compensation through affiliate links in this story. Volts to amps calculator Amps to volts calculation. These bars are always energized, even when the main breaker is off. A motor of a given rated horsepower is expected to deliver that quantity of mechanical power at the motor shaft. 50-amp 240-volt circuit: 50 amps x 240 volts = 12,000 watts; 60-amp 240-volt circuit: 60 amps x 240 volts = 14,400 watts; The simple A x V = W formula can be restated in a number of ways, such as W ÷ V = A, or W ÷ A = V. How to Calculate Circuit Load Demand . When you wire a conventional 120-volt circuit breaker to the panel, it has to contact one of these legs to make a circuit with that voltage. The SI unit of voltage is a volt, the unit of amperage is an ampere (usually shortened to amp), and the unit of power is a watt. When fully seated, it contacts both hot legs of the panel, which makes the voltage in the circuit 240 (or 230) volts. A 240-volt breaker should be sized according to the amperage needed to power the appliance. Each one is a separate leg that attaches to a bus bar in the panel. Single-Phase Motors - HP and Full-Load Currents. Each adjacent breaker contacts a different bus, so one set of alternating breakers represents the total load on one bus while the other alternating set represents the load on the other bus. Amps to volts … He has degrees in science and humanities and years of teaching experience. VA to amps calculator Single phase amps to VA calculation formula. If you touch one with a tool, you could get a serious – even fatal – shock. To install a two-pole breaker, attach the red hot wire to one of the terminals and the black wire to the other. (100Hpx746 = … How to convert VA to Amp. V (V) = I (A) × R (Ω). V DC =Voltage direct current. 230 watts: 19.167 amps: 12 volts: 240 watts: 20 amps: 12 volts: 250 watts: 20.833 amps: 12 volts: Note: conversions are for guide-purposes only and are rounded to maximum 3 decimal places. Chris Deziel is a contractor, builder and general fix-it pro who has been active in the construction trades for 40 years. The voltage V in volts (V) is equal to the current I in amps (A), times the resistance R in ohms (Ω):. Example, if you have 100 hp multiply by 746 and you get 74600. The voltage V in volts (V) is equal to the power P in watts (W), divided by the current I in amps (A):. You can tell how much load you're drawing from each leg by looking at the positions of the breakers. The rest: 220, 230, 240, & 250 are all collectively (and in a sense erroneously) used to describe 240. Use 6 or 8 gauge for 50 amp circuits and 10 gauge for 30 amp ones.
VA=Volt-Ampere. Watts. It's used in some 3 phase deployments. They're stacked together in an arrangement that allows each of them to contact a different bus bar. In keeping with the earlier example, you could think of volts as the water pressure in the hosepipe, which makes the water flow. In residential electricity, a 230-volt circuit is virtually identical to a 240-volt or a 220-volt circuit.

Connect the neutral wire to the chrome neutral bus in the panel and the ground wire to the ground bus. The line transformer outside your house steps down the line voltage to 240 volts, and electricity comes from there to the panel in the form of two hot wires with that much voltage between them. Consequently, you may want to get an electrician to do the job. The breaker that does this is actually two 120-volt breakers. The different numbers are a reflection of the fact that the electricity that comes in from the power line, which is at 240 volts, experiences a voltage drop in the panel and the household circuitry because of resistance and other factors. When talking about the fundamental Ohm's law, we consider a few physical quantities: resistance R, voltage V, and amperage I.Electric current can also be a source of power P so that it can release or transport some energy.

In residential electricity, a 230-volt circuit is virtually identical to a 240-volt or a 220-volt circuit. Once all the wires are secure, snap the breaker into place. Convert between watts and amps. It means that the phase current in amps is computed by 1000 multiplied by the power in kilowatts divided by the square root of three multiplied by the power factor times the line to line voltage RMS in volts. Calculation of AC three phase Kilowatts to amps Line to line Voltage I (A) = 1000 x P (kW) / (√3 x PF x V L-L (V)).

You should get an electrician to do this installation, but if you can't for some reason, be careful never to contact either of the hot bus bars with your tools. A 240-volt cable includes two hot wires – one black and one red – a neutral wire and a ground. Volts. Try to distribute continuous loads, such as the refrigerator or freezer, to avoid overloading a leg, which can cause overheating. Volts are the measurement used to determine how much force is needed to cause the electric current to flow.

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