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Overcurrent devices cannot be doubled up for higher voltages.

You need breaker designed for 220V. While you are technically correct, you need the 220V breaker because it is designed so that you always get 220V from the two phases (as opposed to 0V from one phase) and so both "breakers," so to speak, always trip together. Don't just use two 110V breakers you have lying around, it is not safe.

The approved method is to obtain a 2 pole breaker of the right amperage to run your 240 volt appliance. Also approved but not used as much is a common tie bar that incorporates the two breaker toggle handles into one. The reason for this is safety, if just one breaker trips there will still be 120 volts to ground on the un- tripped breaker. Anyone working on the appliance thinking that the power was off could get a severe shock. This holds true also with switches to turn off 240 volt loads, don't just use a single pole (SPST) switch which just shuts off one leg, use a double pole single throw (DPST) switch which isolates the load completely.

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How can you plug 2000 watts 240v into a 120v 20 amp breaker with out replacing your breaker and all the plugs on the line?

You cannot safely plug a 2000 watt 240v appliance into a 120v 20 amp breaker without risking damage or fire hazard. To use the appliance, consider installing a step-up transformer to convert the voltage from 120v to 240v before plugging it in. This will ensure the appliance operates correctly without overloading the circuit.


Calculate 120Volt 15 amp appliance kWh?

To calculate the kWh usage of a 120V 15A appliance, you can use the formula: Power (in watts) = Voltage x Current. For the given appliance, power = 120V x 15A = 1800 watts. To convert watts to kilowatt-hours (kWh), divide by 1000: 1800 watts / 1000 = 1.8 kWh. Therefore, the appliance uses 1.8 kWh of energy per hour.


If a 120 volt current is protected by a 25 amp circuit breaker What is the largest number of watts an appliance can safely use?

The largest number of watts an appliance can safely use on a 120V circuit protected by a 25A breaker is 3000 watts. You calculate this by multiplying the voltage (120V) by the amperage (25A). This gives you a maximum power capacity of 3000 watts on this circuit.


If you use a 120V appliance out of the US will you still be able to use it in the US after?

If the appliance is designed to operate at 120V only, it should work in the US but may require an appropriate plug adapter. However, if the appliance is not dual voltage and needs a different voltage in the other country, it may not work properly or could be damaged when used in the US. Always check the appliance's voltage requirements before using it in different countries.


What fuse would you use if you were fitting a new plug to a 2.5kw heater assume a voltage of 120v?

To calculate the fuse rating needed, use the formula: Fuse rating = (Power of appliance / Voltage of appliance) + 0.25. For the 2.5kW heater at 120V, the calculation is (2500W / 120V) + 0.25 = 20.83A. Therefore, you would use a 20A fuse for the 2.5kW heater at 120V.

Related Questions

What happens if you plug a 120V appliance into a 240V outlet?

You will burn up your appliance!!!!!


Can 120V appliance work with 220V?

120V appliance will not work on 220V. Use an instrument transformer or voltage regulator to adjust the high voltage to the desired level.


In a home has 120v service there is an electric appliance that a risistance of 12 how much power will this appliance consume?

1440 Watts


Can you buy a 120v appliance and use it with a 220v outlet?

A high voltage will certainly damage a low voltage appliance and perhaps set fire to other things nearby.


How can you plug 2000 watts 240v into a 120v 20 amp breaker with out replacing your breaker and all the plugs on the line?

You cannot safely plug a 2000 watt 240v appliance into a 120v 20 amp breaker without risking damage or fire hazard. To use the appliance, consider installing a step-up transformer to convert the voltage from 120v to 240v before plugging it in. This will ensure the appliance operates correctly without overloading the circuit.


If you have a 240V dryer and installed 30A breakers on both sides of the line reads 120 and 120 how do you get 240 and you have a receptacle that reads 30A 125250 and still does not work?

you do NOT put two 110v breakers in. you put 1 two pole breaker in. the panel is designed to give you 220v off one side OR the other side if you use a 2 pole breaker on one side or the other side. If you look at both 120V lines on an oscilloscope you will notice that they are both 120V to the neutral, but they are 180 degrees out of phase. This means that when one hot is at +120V the other is at -120V. So between the two you have 240V. If you put your meter across both hots you should see 240V. If you do not see 240V across both hots you (or an unlicenced electrician) has wired the outlet without using a proper 220V breaker. You do not see 240V because the hots are in phase, to the voltage differential is 0V, not 240V. 220V breakers cannot do this, unless forcebly installed in the wrong type panel. More than likely someone tried to wire it with 110V breakers.


Can a kitchen stove be on the small appliance circuit?

No, unless it's a gas range. An electric range requires 240V and 40A while a small appliance will be 120V and Max 15A.


Can you plug in a 120v appliance into a socket in UK?

No, the cord ends have different configurations to prevent this sort of thing from happening.


What are the steps in connecting 120V to a 240V 60A air condition panel?

you should have three wires into the panel. two of them go to the double breakers or pull switch and the last is the ground lead. You can pick up 110 vac from one side of either breaker and that ground connection. DO NOT connect to the both breaker wires as that will be 220 vac


Considering 100A 240V service has 2 poles at 100A each is the total usable power actually 200A at 120V?

No, amperage is not additive, but a constant. Think of power as water, its always the same temperature, hot (amps). The pressure is variable (volts). The true answer is undoubtedly more complex, but you get the point. If you need to draw 200 amps you would actually need a 400 amp service because code states you cannot have more than an 80% load on a breaker That's an interesting question and I had to run the theory through my brain a few times to confirm my answer. The answer is if you have a 100A 240V service, you could draw what appears to be 200A from that panel at 120V. If you install 100A 120V single pole breakers on each side of the panel (in reality this would be many breakers but let's keep it simple) then both breakers will operate just fine, giving the appearance of 200A. In reality, however, one breaker actually feeds through to the other breaker. The neutral only carries the unbalanced load so in this hypothetical situation the neutral at the panel carries 0A. So the answer to the question is...if you install ONLY 120v single pole breakers, you can run up to 200A on those circuits (or 80% of that as we have discussed.) But you are only running 100A on each leg of the service conductors and breaker.


Calculate 120Volt 15 amp appliance kWh?

To calculate the kWh usage of a 120V 15A appliance, you can use the formula: Power (in watts) = Voltage x Current. For the given appliance, power = 120V x 15A = 1800 watts. To convert watts to kilowatt-hours (kWh), divide by 1000: 1800 watts / 1000 = 1.8 kWh. Therefore, the appliance uses 1.8 kWh of energy per hour.


If a 120 volt current is protected by a 25 amp circuit breaker What is the largest number of watts an appliance can safely use?

The largest number of watts an appliance can safely use on a 120V circuit protected by a 25A breaker is 3000 watts. You calculate this by multiplying the voltage (120V) by the amperage (25A). This gives you a maximum power capacity of 3000 watts on this circuit.