An easy way to understand volts, watts and current .
Voltage is a measurement similar to water pressure.
Wattage is similar to volume as in gallons of water.
Amps (Amperes or current) is similar to rate of flow as in gallons per hour.
Paul, (the first answer) got his answer by dividing 2800 by 220 = 13amps.
So if a device uses 1500 watts (like an electric heater) and requires 110 volts,
The current in amps is 1500/110 = 13 amps!
I think he means how many watts are available? (Such as 1500w on a 15 amp / 110 volt circuit) How many in a 220 / 30 amp circuit?
Volts are voltage, or capacity to push current (A) through conductors. How much current can be pushed is determined by the total load (resistance) and leads.themselves. Household 230-V power circuits (the nominal has changed since a couple of years to 230, without practical consequences) are fused at 16 A continuous, which is around 3,680 VA (or W). 10A fuses can be loaded by around 2,300W, 6A ones up to 1380W. ANd the total of all loads on all fuses should not exceed the rating of the master fuse and/or power counter, or they may cut.
As many as you need, until it trips a circuit breaker. Volts is like pressure and amperes is like volume. Watts is the combination of both. The device using current determines how many watts it needs to operate.
a watt is a combination of volts and amps. you have stated half of the math. if you know the volts in a circuit and the current flow or amps, multiply the amps by the volts and you get watts as i understand it.
Wattage is in the device and the dependant factors are Voltage and Resistance. Based on resistance of the device, the amount of current (A) will be defined. As current increases the wattage will increase propotionatly
P(W) = V(V) * I(A) =
None. Watts are in the devices that are connected to the supply.
i give up, how many?
