120v Vs 240v Plug

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I' SORRY THAT I HAVEN'T RESPONDED SOONER. I AM 92 YEARS OLD.AND HAVE BEEN BUSY.

I KNOW MY AGE IS A POOR EXCUSE BUT I LIKE TO BRAG A BIT.I AM LIVING IN A RETIREMENT PLACE AND HAVE A PROBLEM GETTING COOL AIR INTO MY BEDROOM.THERE IS A 5 INCH SQUARE VENT IN THE BEDROOM/ LIVING ROOM WALL.

IT IS INTENDED TO MOVE AIR FROM A LIVING ROOM AIR CONDITIONER, THROUGH THE WALL AND INTO THE BEDROOM.

IT DOESN'T WORK VERY WELL.I MOUNTED THE LITTLE FAN IN THE VENT.

  • IT WORKS BUT IS NOT REALLY POWERFUL ENOUGH TO DO THE JOB.MY INTENT IS TO REPLACE IT WITH YOUR MORE POWERFUL FAN.VISITS FROM GRAND DAUGHTERS AND GREAT GRANDCHILDREN HAVE SLOWED ME DOWN.IF YOU DESIRE A BETTER LETTER, LET ME KNOW.THANK YOU FOR YOUR PATIENCE.KEEP SMILING.Frank Little [email protected]
  • I is electrical current or amperage, measured in Amps (A).
  • V is electrical potential or voltage, measured in Volts (V). The standard voltage for most electrical devices is 110-120V, and upgraded voltage powerful electric devices use 220V or 240V. Batteries run at 12V or 24V.

Using this equation, we can convert watts directly to amps, if we know the voltage. The higher the wattage, the lower the amps will be for the same amount of watts.

To help you out, we have prepared an easy-to-use Watts To Amps calculator. Below the calculator, you will find examples of how to make the conversion and 5 calculated tables of watts to amps as 12V, 24V, 120V, 220V, and 240V.

Watts To Amps Calculator (W to A)

Here you can easily convert watts to amps using this calculator. You can play around with numbers a bit as well:

To demonstrate how watts can be converted to amps, we solved a few examples of how many amps is 500 watts, 1000 watts, and 3000 watts. In the end, you will also find a watts-to-amps table at 120V electric potential.

Here’s a quick useful piece of info:

How many watts make an amp?

At 120V, 120 watts make 1 amp. That means that 1 amp = 120 watts.

How many watts in 1 amp at 220 volts?

At 220V, you get 220W per 1 amp.

With that in mind, let’s look at the 3 examples:

Example 1: How Many Amps Is 500 Watts?

Let’s say we have a 500W air conditioner plug into 120 V voltage.

Here is how we can calculate how many amps is 500W:

I = P/V

If we input the P = 500 Watts and V = 120 Volts, we get:

I = 500 Watts/120 Volt = 4.17 Amps

In short, 500 Watts equals 4.17 Amps.

What if the voltage would be 220V?

Let’s calculate how many amps is 500W at 220V:

I = 500 Watts/220 Volt = 2.27 Amps

At 220V, 500W draws 2.27 amps.

Example 2: How Many Amps Is 1000 Watts?

If we repeat the exercise and ask ourselves how many Amps equals 1000 Watts, we get:

I = 1000 Watts/120 Volt = 8.33 Amps

We see that a 1000 W device draws twice as many Amps as a 500 W device.

For 220V, we get this watts to amps calculation:

I = 1000 Watts/220 Volt = 4.55 Amps

In short, 1000W draws 8.33 amps at 120V, and 4.55 amps at 220V.

Example 3: 3000 Watts Equals How Many Amps?

3000 Watt devices can be plugin in 120V or into 220V. In cases with higher wattage, it’s not unusual to use a higher 220 voltage. This is designed to reduce the amperage.

For example, 3000 Watt equals to:

  • 25 Amps, if you use 120 V.
  • 13.64 Amps, if you use 220 V.

For 25 Amps, for example, you would already need an amp breaker. But if you plug such a device into 220 V, the current generated is only 13.64 Amps (there is no need for amp breakers).

Example: Bigger multi-zone mini-split units usually need amp breakers. You can check 2-zone, 3-zone, 4-zone, and 5-zone mini-split systems to see how many amps they run on.

Watts To Amps At 12V (For Batteries)

Watts:Amps (at 12V):
1 Watt to amps at 12V:83 mA (milliamps)
10 Watts to amps at 12V:830 mA
50 Watts to amps at 12V:4.17 Amps
100 Watts to amps at 12V:8.33 Amps
200 Watts to amps at 12V:16.67 Amps
300 Watts to amps at 12V:25.00 Amps
400 Watts to amps at 12V:33.3 Amps
500 Watts to amps at 12V:41.7 Amps
600 Watts to amps at 12V:50.0 Amps
700 Watts to amps at 12V:58.3 Amps
800 Watts to amps at 12V:66.7 Amps
900 Watts to amps at 12V:75.0 Amps
1000 Watts to amps at 12V:83.3 Amps
1100 Watts to amps at 12V:91.7 Amps
1200 Watts to amps at 12V:100.0 Amps
1300 Watts to amps at 12V:108.3 Amps
1400 Watts to amps at 12V:116.7 Amps
1500 Watts to amps at 12V:121.7 Amps
1800 Watts to amps at 12V:150.0 Amps
2000 Watts to amps at 12V:166.7 Amps
2500 Watts to amps at 12V:208.3 Amps
3000 Watts to amps at 12V:250.0 Amps

One good example where you need to calculate the amps from watts is 12V wire sizing. If you want to pick the correct size wire for the 12V circuit, you have to know the minimum ampacity you need from your wire. You can check how to correctly calculate a 12V wire size here.

Watts To Amps At 24V (For Batteries)

Watts:Amps (at 24V):
1 Watt to amps at 24V:42 mA (milliamps)
10 Watts to amps at 24V:420 mA
50 Watts to amps at 24V:2.08 Amps
100 Watts to amps at 24V:4.17 Amps
200 Watts to amps at 24V:8.33 Amps
300 Watts to amps at 24V:12.50 Amps
400 Watts to amps at 24V:16.67 Amps
500 Watts to amps at 24V:20.83 Amps
600 Watts to amps at 24V:25.00 Amps
700 Watts to amps at 24V:29.17 Amps
800 Watts to amps at 24V:33.33 Amps
900 Watts to amps at 24V:37.50 Amps
1000 Watts to amps at 24V:41.67 Amps
1100 Watts to amps at 24V:45.83 Amps
1200 Watts to amps at 24V:50.00 Amps
1300 Watts to amps at 24V:54.17 Amps
1400 Watts to amps at 24V:58.33 Amps
1500 Watts to amps at 24V:62.50 Amps
1800 Watts to amps at 24V:75.00 Amps
2000 Watts to amps at 24V:83.33 Amps
2500 Watts to amps at 24V:104.17 Amps
3000 Watts to amps at 24V:125.00 Amps

Watts To Amps At 120V (Standard Outlet)

Watts:Amps (at 120V):
100 Watts to amps at 120V:0.83 Amps
200 Watts to amps at 120V:1.67 Amps
300 Watts to amps at 120V:2.50 Amps
400 Watts to amps at 120V:3.33 Amps
500 Watts to amps at 120V:4.17 Amps
600 Watts to amps at 120V:5.00 Amps
700 Watts to amps at 120V:5.83 Amps
800 Watts to amps at 120V:6.67 Amps
900 Watts to amps at 120V:7.50 Amps
1000 Watts to amps at 120V:8.33 Amps
1100 Watts to amps at 120V:9.17 Amps
1200 Watts to amps at 120V:10.00 Amps
1300 Watts to amps at 120V:10.83 Amps
1400 Watts to amps at 120V:11.67 Amps
1500 Watts to amps at 120V:12.17 Amps
1800 Watts to amps at 120V:15.00 Amps
2000 Watts to amps at 120V:16.67 Amps
2500 Watts to amps at 120V:20.83 Amps
3000 Watts to amps at 120V:25.00 Amps

Example: How many amps is 1,500 watts at 120V? Simply consult the chart: There are 12.17 amps in 1,500 watts (at 120V voltage).

Watts To Amps At 220V (220V Outlet)

Watts:Amps (at 220V):
100 Watts to amps at 220 volts:0.45 Amps
200 Watts to amps at 220 volts:0.91 Amps
300 Watts to amps at 220 volts:1.36 Amps
400 Watts to amps at 220 volts:1.82 Amps
500 Watts to amps at 220 volts:2.27 Amps
600 Watts to amps at 220 volts:2.73 Amps
700 Watts to amps at 220 volts:3.18 Amps
800 Watts to amps at 220 volts:3.64 Amps
900 Watts to amps at 220 volts:4.09 Amps
1000 Watts to amps at 220 volts:4.55 Amps
1100 Watts to amps at 220 volts:5.00 Amps
1200 Watts to amps at 220 volts:5.45 Amps
1300 Watts to amps at 220 volts:5.91 Amps
1400 Watts to amps at 220 volts:6.36 Amps
1500 Watts to amps at 220 volts:6.82 Amps
1800 Watts to amps at 220 volts:8.18 Amps
2000 Watts to amps at 220 volts:9.09 Amps
2500 Watts to amps at 220 volts:11.36 Amps
3000 Watts to amps at 220 volts:13.64 Amps

Example: In many cases, you need to convert watts to amps if you are looking to find an adequate size wire for AC. You can look at examples of how this is done by checking the air conditioner wire size calculator here and the AC breaker size chart here.

Watts To Amps At 240V (240V Outlet)

Watts:Amps (at 120V):
100 Watts to amps at 240V:0.42 Amps
200 Watts to amps at 240V:0.83 Amps
300 Watts to amps at 240V:1.25 Amps
400 Watts to amps at 240V:1.67 Amps
500 Watts to amps at 240V:2.08 Amps
600 Watts to amps at 240V:2.50 Amps
700 Watts to amps at 240V:2.92 Amps
800 Watts to amps at 240V:3.33 Amps
900 Watts to amps at 240V:3.75 Amps
1000 Watts to amps at 240V:4.17 Amps
1100 Watts to amps at 240V:4.58 Amps
1200 Watts to amps at 240V:5.00 Amps
1300 Watts to amps at 240V:5.42 Amps
1400 Watts to amps at 240V:5.83 Amps
1500 Watts to amps at 240V:6.25 Amps
1800 Watts to amps at 240V:7.50 Amps
2000 Watts to amps at 240V:8.33 Amps
2500 Watts to amps at 240V:10.42 Amps
3000 Watts to amps at 240V:12.50 Amps

If you have a specific question about how to convert Watts to Amps, you can use the comment section below, and we’ll try to help you out.

Note: Figuring out watts to amps can help you, for example, to calculate how long does it take to charge a Tesla car.

When you figure out amps, you will probably need adequate wiring for your amp size. You can consult the ampacity AWG chart with wire sizes in mm, mm2, and amps here.

You can also check what wire sizes you need to conduct certain amps:

  • 20 amp wire size.
  • 30 amp wire size.
  • 40 amp wire size.
  • 50 amp wire size.
  • 60 amp wire size.
  • 100 amp wire size.
  • 200 amp wire size.
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