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Answer for USA, Canada and countries running a 60 Hz power supply service. Watts= voltage X amps At 120 volt total watts would be 2400 at 20 amps. The electrical code states that circuit conductors that are fed by this breaker on a continuous load can only be loaded to 80%. #12 wire rated at 20 amps, derated to 16 amps continuous = 16 x 120 = 1920 watts, #10 wire rated at 30 amps derated to 24 amps continuous = 24 x 120 = 2880 watts. On load calculations this derate should be taken into consideration. To maintain the required wattage needed for the load the wire size and/or the next size breaker may be needed.
Wiki User
∙ 14y ago
Wiki User
∙ 14y ago
A two pole 20 amp breaker will handle 20 amps x 240 volts = 4800 watts. A single pole, two pole or a three pole breaker all have the same interruption capacity. The number of poles does not change the trip setting of a breaker.
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For an American residential application, 20 amps x 120 volts = 2400 watts.
A good electrical design never exceeds 80%, so 2400 watt capability = about 1920 max watts should be used with your 20 amp breaker.
Wiki User
∙ 13y agoWatts = A x V. 240 x 20 = 4800 theoretical. A breaker protects the wire that is drawing the current. On a continuous load the electrical code only allows the wire to carry 80% of its rated capacity. So to answer the question 4800 x 80% or .8 = 3840 watts.
Wiki User
∙ 10y agoThe watts of power supplied to any part of the circuit, or dissipated by it, is
(current through the circuit) x (voltage across that part of the circuit) .
Wiki User
∙ 14y agoIf the voltage is 120 Volts it would be 2400 watts. Watt = volts times amps.
Wiki User
∙ 12y agoWatts (power or P) is calculated by multiplying amps (A or I) times voltage (V or E). The formula is P=IE.
For a 120V, 20A circuit that comes out to 2400 watts of power.
Wiki User
∙ 12y ago2400 Watts = 120 x 20 or 2.4 KW
Anonymous
2400
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How many watts can a double 30 amp breaker switch handle?
The maximum wattage that a 30 amp breaker can handle is 30 x 230 = 6900 watts. Other variables come into play and this number will decrease depending on the load, duty time, and difference in voltage fluctuation.
Why would a 30A-250V outlet still have power with breaker off?
It sounds like the breaker is unserviceable. Seeing as it supplies 240 volt outlet it must be a two pole breaker. If it is a single handle two pole breaker then one pole set inside the breaker is not disconnecting one of the lines. If it is supplied from two single pole breakers that has a common tie, the common tie might be loose and does not shut off both poles when thrown to the off position. If there is no common tie then both breakers must be turned off to interrupt the 240 volt supply.
Should a hot water heater be put on a 30 single or 30 double amp breaker?
What governs the type of breaker is the voltage and wattage of the heater elements. If the tank is 120V then you would only use one breaker. The size of the breaker you use will depend on the watts of the element. Watts = amps x volts, Amps = Watts/ volts. Once you establish the amperage then size the wire and the breaker to fit. If the tank is 240V the same rules apply only you would use a 2 pole breaker. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS. If you do this work yourself, always turn off the power at the breaker box/fuse panel BEFORE you attempt to do any work AND always use a meter or voltage indicatorto insure the circuit is, in fact, de-energized.
Can you run a double pole 30 amp breaker to two 110 recepticles?
No, A double pole breaker is going to give you 220 volts. 220 Volts is too much voltage for a 110 Volt outlet to handle. == Answer== Better to pull the duplex 30a and install to single-pole 20a breakers...if one kicks out, you will know which side the problem's on. And there's no problem with running a 20a circuit over 10awg wire.
Can a double pole circuit breaker be used for 2 different circuits I have a 20 amp double pole breaker want 2 circuits running 14 gauge wire?
can a 20 amp double pole circuit breaker be used for 2 different 120 v circuits using 14 - 2 wire
How many watts will a 30 amp two pole breaker handle at 240 volts?
30X240=7200
How many watts can a double 30 amp breaker switch handle?
The maximum wattage that a 30 amp breaker can handle is 30 x 230 = 6900 watts. Other variables come into play and this number will decrease depending on the load, duty time, and difference in voltage fluctuation.
How many watts will a 20 amp douple pole breaker handle?
The formulae for calculating watts to amps is Watts divided by Voltage. Therefore to get from Amps to Watts the calculation is Amps × Voltage. Therefore if you are working on a 240 volt supply the calculation is 20 (Amps) × 240 (Volts) which = 4800 watts.
Does a double 50 amp breaker make a 100 amp?
No, a double pole 50 amp breaker protects a 240 volt supply at 50 amps. The number that is on the handle of the breaker is the amperage that the breaker will trip at if an overload occurs on the circuit.
How many pole breaker for air condition?
If the power requirement is 120 volts it will be connected to a single pole breaker rated at the amperage requirement of the air conditioner. If the voltage of the air conditioner is 240 volts, then a two pole breaker will be required.
Can you use two 15 amp single pole breakers in place of a double pole 30 amp breaker?
Yes. An everyday occurrence of this circuitry is in your kitchen counter split receptacles. The top half of the receptacle is a 15 amp circuit and from the same breaker the bottom half of the receptacle is another 15 amp circuit. A two pole single handle breaker is a common trip. If one of the circuits fed from the breaker faults the other connected circuit will shut off also. If you are talking about slot position in a breaker panel, you can remove the two pole breaker and install two single pole breakers.
Is 30 amp double pole breaker ok for 4800 watt wall heater?
Yes. watts / volts = amps. 4800/240=20amps.
How many switches can you wire on a single pole breaker?
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Should you buy double pole breaker or single pole?
Use of a double pole breaker or a single pole breaker depends entirely on the application. If you don't know about the application, contact a qualified electrician in your area.
How many watts will a 30 amp two pole breaker handle?
A two pole breaker clips to adjacent buss in the breaker panel, supplies 240 volt power to equipnent like clothes dryers and air conditoning.The breakers have a mechanical common trip so if either pole exceeds its current rating both lines are opened shutting down the equipment.Each pole can carry up to its rated current of 30 amps.Hope this helps.
Why would a 30A-250V outlet still have power with breaker off?
It sounds like the breaker is unserviceable. Seeing as it supplies 240 volt outlet it must be a two pole breaker. If it is a single handle two pole breaker then one pole set inside the breaker is not disconnecting one of the lines. If it is supplied from two single pole breakers that has a common tie, the common tie might be loose and does not shut off both poles when thrown to the off position. If there is no common tie then both breakers must be turned off to interrupt the 240 volt supply.
Do you split wattage on 2 pole breaker?
If the load is rated 220 or 230 or 240 volts (all the same thing), and specifies a wattage rating, that wattage rating is at the double pole voltage. You wouldn't make any adjustments to it. The load should also indicate the input current in Amps, which is used for sizing your breaker. If not, watts=amps x volts, so amps=watts/volts. For example, a 3800 Watt heater at 240v would require 15.83 amps. The breaker for this circuit would be 125 percent of that (safety factor), or 20 amps, 2 pole.
