'Voltage' is electromotive force, and the 'Watt' is a unit of power.
You can plug a 240 watt appliance (light, toy, radio etc) into a 120 volt socket as long as the appliance is rated for 120 volt AC operation.
Multiply the current by the voltage: 120 times 0.3, which is 40 watts.
By connecting two separate 120 VAC legs into one. If they are and if it comes to your home from a local utility they will be, it will add to 240. Whenever combining AC or Sine waves into one for the purpose of adding they must be in phase.
The answer to this is country-specific. In the United States: Residential 120 VAC. Commercial also uses 277 VAC Elsewhere in the world: 220 volts to 260 volts, most frequently 230-240 volts AC.
You could if you have an inverter that can change 12 VDC to 120 VAC. Just plug it into the cigar lighter socket. On the back of the inverter there will be a 120 volt receptacle built into the inverter. Check the load of what you want to plug into it to ascertain that you purchase the correct size of inverter. <><><><><> Keep in mind that power is power, and a typical cigar lighter socket puts out about 72 watts. The inverter will only be able to do less than that.
Most American Plugin's will not work in Australia and/or other countries.
The maximum voltage rating for a 120/240 VAC breaker is 240 volts.
Multiply the current by the voltage: 120 times 0.3, which is 40 watts.
By connecting two separate 120 VAC legs into one. If they are and if it comes to your home from a local utility they will be, it will add to 240. Whenever combining AC or Sine waves into one for the purpose of adding they must be in phase.
Watts = current x volts for a resistive load. You need to know a voltage to calculate amps. If it is a 120 VAC residential voltage it would be a whopping 266,000/120 = A or 2,216.7 Amps. If it is 240 VAC then half that. To put that in perspective the service to a typical residence might be between 100 and 200 Amps.
In the United States, 110-120/240 VAC is the standard.
Assuming 120 VAC in a residence maximum watts = 15 x 120 = 1800 Watts. For a continuous load you can support 1440 watts which is 80& of maximum. You need 14 AWG gauge wire.
Primary and secondary are only terms of convenience based on the ratings and purpose of the transformer. If a transformer is labeled 120 to 240 volts, just pick a winding and apply 120 VAC. If the output is 240 volts you found the primary and secondary. If you apply 120 volts and get 60 volts out that means the side where you applied 120 VAC is the secondary.
The answer to this is country-specific. In the United States: Residential 120 VAC. Commercial also uses 277 VAC Elsewhere in the world: 220 volts to 260 volts, most frequently 230-240 volts AC.
You could if you have an inverter that can change 12 VDC to 120 VAC. Just plug it into the cigar lighter socket. On the back of the inverter there will be a 120 volt receptacle built into the inverter. Check the load of what you want to plug into it to ascertain that you purchase the correct size of inverter. <><><><><> Keep in mind that power is power, and a typical cigar lighter socket puts out about 72 watts. The inverter will only be able to do less than that.
The ratio for a 480 VAC to 120 VAC is 4 to 1.
Most American Plugin's will not work in Australia and/or other countries.
Dubai uses 220 VAC at 50 Hz (in the USA, we use 120 VAC at 60 Hz). They also use the G type plug.