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In order to calculate wattage, you must know the value of the voltage source.
Using Ohms law, you can calculate wattage by multiplying the number of volts by the number of ampers (P=I X E), where P is the power in watts, I is the current in Amperes, and E is the source voltage in Volts.
So, at 240 volts, 100 amperes would represent 240V X 100A = 24,000 watts.
At 120 volts, 100 amperes would represent 120V X 100A = 12,000 watts.
At 12 volts, 100 amperes would represent 12V X 100A = 1200 watts.
Note: This is only completely true for DC (Direct Current) or 100% resistive AC loads. If you're calculating wattage on an inductive load (such as a large tranformer or fluorescent light fixture), for any given amount of current, the actual value for wattage will always be less than that calculated amount.
If you're unsure about the nature of an AC load, you can only use ohm's law as an approximation of wattage. For AC loads, you will often see the term "Volt-Amperes" used instead of "Watts" when calculating the power consumption of AC loads.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoYou cannot convert watts to amps, since watts are power and amps are coulombs per second (like converting gallons to miles). HOWEVER, if you have at least least two of the following three: amps, volts and watts then the missing one can be calculated. Since watts are amps multiplied by volts, there is a simple relationship between them.
However, In some engineering disciplines the volts are more or less fixed, for example in house wiring, automotive wiring, or telephone wiring. In these limited fields technicians often have charts that relate amps to watts and this has caused some confusion. What these charts should be titled is "conversion of amps to watts at a fixed voltage of 110 volts" or "conversion of watts to amps at 13.8 volts," etc.
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85 watts equals zero amps.
Wiki User
∙ 15y agoIn calculating watts, the formula is the same for AC or DC current -- W(Watts) = Volts (V) times Amps (A). Therefore, 12 Volts X 105 Amps = 1,260 Watts.
Wiki User
∙ 14y agoIt depends on the voltage of the system. Once you determine the voltage, the formula to figure out the amperage is: Amps = Watts / Volts
Wiki User
∙ 12y agoThat depends on circuit voltage.
1 watt is equal to 1 volt times 1 amp.
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900 watts equal how many amp?
That depends on the voltage available. We assume 120 volts. Then amperage equals power divided by voltage. Amp. = 900 watts / 120 volts = 7.5 amps.
How many watts is in 9 volts?
You can't convert volts to amperes. Those are quite different units; that would be like converting, say, meters to seconds.
Do you have to use a transformer if your device have 900 Watts 220 V and 60 Hz with 7.5 amps?
If your device uses 900 Watts at 7.5 Amps, then it requires 120 volts. If you want to use it where the supplied current is 220 volts, then you'll need a transformer - but only if the device can operate on 50 Hz. Most places that use 220 Volts supply it at 50 Hz. If your device says it can operate on 50 Hz you can use a transformer.
How many watts does a 1000W microwave use?
1000 W means one thousand watts. That is normally the heating effect that it produces, so the power taken from the supply could be 1500 watts.
On output from gas generator generac mod g1000?
900 running watts, 1000 surge watts
900 watts equal how many amp?
That depends on the voltage available. We assume 120 volts. Then amperage equals power divided by voltage. Amp. = 900 watts / 120 volts = 7.5 amps.
How many amps does a 110 volt 1.3 kw motor draw?
110 volts divided by 1,300 watts(1.3 kw) = .09 kw or 900 watts.
How many watts is in 9 volts?
You can't convert volts to amperes. Those are quite different units; that would be like converting, say, meters to seconds.
How many amps are in 1500 watts?
Those units describe different types of quantities, and the question is something likeasking "How many hours are in 15 gallons ?".When an electric current is consuming or dissipating 1,500 watts of power as it flowsfrom one point to another, then the number of amps of current is(1,500) divided by (the voltage between the two points) .
How many watts of cooking power does this microwave have?
According to the manufacturer, the Sharp R-930AK has 900 watts of cooking power.
How many pounds does 900 grams equal?
900 grams is equal to 1.98416 pounds.
Do you have to use a transformer if your device have 900 Watts 220 V and 60 Hz with 7.5 amps?
If your device uses 900 Watts at 7.5 Amps, then it requires 120 volts. If you want to use it where the supplied current is 220 volts, then you'll need a transformer - but only if the device can operate on 50 Hz. Most places that use 220 Volts supply it at 50 Hz. If your device says it can operate on 50 Hz you can use a transformer.
Can 2 heaters 900 watts be safe in 1 room with 110 v 15 amps?
no to many currents flowing will cause circuit to heat up and trip breaker if doesn't trip will cause thermal melt down igniting a fire
How many watts does a 1000W microwave use?
1000 W means one thousand watts. That is normally the heating effect that it produces, so the power taken from the supply could be 1500 watts.
How many centimeters does 9 meters equal?
900
How many centmeters equal to 9 meters?
900
How many hundreds are equal to 90000?
900 hundreds
