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Actually the NEC says that the load on a branch circuit can only be 80% of the breaker size since Some appliances use a more energy to start up. so to be legal, you could only have a 1440W load on a 15 amp circuit, and 2880W with a 240 v 15 amp breaker.
Another Answer You really should be asking how you can estimate ENERGY (not 'power') consumption, based upon a wattage rating. The term, 'wattage', is a slang term for 'power', which is expressed in watts. Power is simply a rate, the rate at which energy is being consumed, and energy (for the purpose of billing, at least) is expressed in kilowatt hours.
So if you know the power ('wattage') of your load, then you must ensure that it is expressed in kilowatts and, then, multiply it by the number of hours that the load is operating. This will then tell you how much energy has been consumed over that period, expressed in kilowatt hours.
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How many kilowatts per hour does a flat screen tv use?
None. There is no such thing as a 'kilowatt per hour'. If, on the other hand, you are asking how many 'kilowatt hours' a flatscreen television uses, simply look at its nameplate to find its power rating in kilowatts (more likely, it's in watts, so you need to divide by 1000), and multiply it by 1 to find the number of kilowatt hours consumed over a period of one hour.
Where can you find the power rating of an electrical appliance?
Normally the power rating of an electrical appliance can be found on its 'Rating Plate' or, if there isn't one, use the following formula W = A x V, where W = watts, A = current and V = voltage.
How many kilowatts in 1kva?
Its a bit of a trick question. 1 watt is one volt-amp except in situations where the power factor has increased or decreased that ratio. For instance with a power factor of .8 a volt-amp is equal to .8 watts. So with a perfect power factor 1 kva (kilo-volt-amp) is equal to 1 kilowatt. But if the power factor is something other then 1 you can find it by pf*w=va.
1 megawatt equals how many amps at 480 volt 3 phase?
The equation you need to find amperage when kilowatts are known. Amps = kW x 1000/1.73 x volts x PF. Use .9 as a Power Factor constant.First megawatts must be changed to kilowatts. 1000000/1000 = 1000 kilowatts. Amps = 1000 x 1000/ 1.73 x 480 x .9 = 1000000/747 = 1338.6 amps.
How do you find out the power rating of your power supply?
In America it should be 60hz. But you can hook up a power meter to the line and find out the real frequency and voltage of the common household or office power line. You may be surprised at the number of spikes and drops in voltage and frequency in a household line. A good UPS can some times tell you as well.
How many kilowatts per hour does a flat screen tv use?
None. There is no such thing as a 'kilowatt per hour'. If, on the other hand, you are asking how many 'kilowatt hours' a flatscreen television uses, simply look at its nameplate to find its power rating in kilowatts (more likely, it's in watts, so you need to divide by 1000), and multiply it by 1 to find the number of kilowatt hours consumed over a period of one hour.
If kilowatts are known how to you find the proper wire size?
Wire size needed depends on amperage, not watts. If you know the voltage of the power supplied you can calculate the amperage using this form of the "power formula":A = W / VThen there are tables that tell the amperage each wire gauge is capable of carrying. Just select the gauge that has the amperage rating just larger than you calculated.
How you find out amphere only if you know kilowatts?
Kilometers
How many watts in 26kw?
To find watts in kilowatts multiply kilowatts by 1000. In this case, 26 x 1000 = 26, 000 watts.
How do you find the current rating of a zener diode if the power rating is 500mw and a voltage rating of 10v?
A zener diode with a rating of 500 mW will pass 50 mA at 10 V. (Power = voltage times current)Note: The question appears mis stated, in that it states a rating of 500 MW, not 500 mW. To my knowledge, there is no zener with a rating of 500 MW.
Where can you find the power rating of an electrical appliance?
Normally the power rating of an electrical appliance can be found on its 'Rating Plate' or, if there isn't one, use the following formula W = A x V, where W = watts, A = current and V = voltage.
How many kilowatts in 1kva?
Its a bit of a trick question. 1 watt is one volt-amp except in situations where the power factor has increased or decreased that ratio. For instance with a power factor of .8 a volt-amp is equal to .8 watts. So with a perfect power factor 1 kva (kilo-volt-amp) is equal to 1 kilowatt. But if the power factor is something other then 1 you can find it by pf*w=va.
How do you figure out the amps of a transformer when it only tells you it puts out 20 vdc?
I suspect you are referring to an external power supply for a device, which consists of a transformer and a smoothing circuit of some kind. Look on the device it powers, there may well be a rating plate or an input fuse. You might also find a VA rating or wattage rating. If so, Google for power formulae to manipulate to find amps.
1 megawatt equals how many amps at 480 volt 3 phase?
The equation you need to find amperage when kilowatts are known. Amps = kW x 1000/1.73 x volts x PF. Use .9 as a Power Factor constant.First megawatts must be changed to kilowatts. 1000000/1000 = 1000 kilowatts. Amps = 1000 x 1000/ 1.73 x 480 x .9 = 1000000/747 = 1338.6 amps.
How do you find a company's public debt rating?
Rating agencies
What formula would you use to calculate the current drawn in a low beam headlamp circuit?
Since power is the product of voltage and current, you will need to find out the power rating of the headlamp when on low beam. To find the current, divide the power of the lamp by the voltage (12 V).
How do you calculate 3 phase power factor?
The power factor for a three phase generator is 80 percent. The generator consumes 36 kilowatts and a line to line voltage of 400 volts.
