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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.

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Q: How many watts and romex gauge is safe for a 15amp breaker?
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What is the wire size required for 1800 watts for lamps?

14 gauge will handle it with a 15 amp breaker. If you use 12 gauge use a 20 amp breaker.


Can you use 14 wire for a light off a 20 amp circuit?

Yes, in home wiring as long as it is protected by a 15 amp breaker. Remember this circuit will only handle 1800 watts and cannot be loaded to any more than 1440 watts. So if each light is 75 watts then the maximum you can install is 19.


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 can run through 12-3 wire?

Wire is rated in ampacity, You can use only 80% of the rated ampacity. Voltage and amperage are inversely proportional. So at 120 volts alternating current you safely run 1800 watts ( I have added a small safety margin). At 240 volts you can run 3600 watts. I hope this has answered you question Ampsxvolts=watts watts/volts=amps


What size breaker you would use for a 110 volt window air conditioning unit?

Breaker sizing is dependant on what the load amperage is that the breaker is connected to. If the amperage is not given but just the wattage, use this equation I = W/E. Amps = Watts/Volts. This air conditioner unit should be on a dedicated circuit receptacle. On these types of loads the conductor can only be loaded to 80% of the conductors rating. So a 15 amp breaker times 80% = 12 amps or Watts = Amps x Volts, 12 x 120 = 1440 watts. A 20 amp breaker times 80% = 16 amps or Watts = Amps x Volts, 16 x 120 = 1920. Once the breaker is sized remember to use the correct wire size to correspond with the amperage of the breaker.

Related questions

What is the wire size required for 1800 watts for lamps?

14 gauge will handle it with a 15 amp breaker. If you use 12 gauge use a 20 amp breaker.


How many watts can be on a 15amp breaker?

At 120 volts a 15 amp breaker can be loaded to 1800 watts before it will trip. If it is a continuous load then the electrical code states that it is only allowed to be loaded to 80%. This will be 1800 x .8 = 1440 watts. If the voltage is not 120 volts use the following equation Watts = Amps x Volts. Amps being the breaker size that is to be used.


How much wattage is available in a 15amp breaker?

A 15-amp breaker can handle a maximum load of 1800 watts (15 amps x 120 volts). However, it is recommended to only load a circuit up to 80% of its capacity, so in practice, you should only use up to 1440 watts on a 15-amp breaker.


How many watts does a 18 watt floresent light bulb consume?

Divide the wattage by the voltage. If it is 120Volt then the answer is .15Amp


Can you use 14 wire for a light off a 20 amp circuit?

Yes, in home wiring as long as it is protected by a 15 amp breaker. Remember this circuit will only handle 1800 watts and cannot be loaded to any more than 1440 watts. So if each light is 75 watts then the maximum you can install is 19.


What is the maximum number of 60-W light bulbs you can connect in parallel in a 120-V home circuit without tripping the 30-A circuit breaker?

If your not interested in safety or wiring codes use the formula. E x I = Va(Watts without knowing Power Factor.) E is your voltage at the source (Breaker) 110v, 115v, 117v. I is 15amp the breaker is rated for. X is your number of bulbs. example. 110 x 15 = 60X : 60x = 1650 : 1650/60 = X Please do not attempt doing this hookup. % If your not interested in safety or wiring codes use the formula. E x I = Va(Watts without knowing Power Factor.) E is your voltage at the source (Breaker) 110v, 115v, 117v. I is 15amp the breaker is rated for. X is your number of bulbs. example. 110 x 15 = 60X : 60x = 1650 : 1650/60 = X Please do not attempt doing this hookup.


How much electricity can run on 15amp breaker?

A 15 amp breaker can handle up to 1800 watts of electricity. This means you can run multiple small appliances or devices that consume a combined total of less than 1800 watts without overloading the circuit. It is important to not exceed this limit to prevent the breaker from tripping.


How much 1200 watts on one breaker?

Not a whole lot. Assuming that is 120 volt power, 1200 watts would be 10 amps. A standard breaker is 15 amps.


Can six recessed lights of 50 watts be on a 15 amp breaker?

Should be fine if that is all that is on the breaker.


20 amp breaker how many watts?

On a 20 amp breaker, you can safely operate devices that consume up to 2400 watts (20 amps x 120 volts = 2400 watts). Exceeding this limit can trip the breaker to prevent overheating and fire hazards.


How much wattvoltage rough estimate would a house need for - 10 50W lights 1 TV 1 refrigerator 1 wall unit air conditioner 1 microwave 1 washing machine?

you will need 1-15 amp circuit 120 volts with 14 guage romex wire for lights / you will need 1- 20 amp circuit with 12/2 romex going to receptacle that microwave will plug into in Virginia this has to be a dedicated circuit meaning nothing else but microwave can be plugged into this receptacle. the same rules apply also to the washer and the refrigerator as the microwave. the t.v. also should have 1-20amp receptacle to plug in to but this doesn't have to be a dedicated circuit and other items can be plugged into this receptacle such as vcr's lamps etc. you did not say whether you were planning on having a 120 volt air conditioner or a 230 volt a/c but either way you will need a dedicated circuit with either 1-20amp receptacle using 12/3 romex wire or 1-30amp receptacle using 10/2 romex wire. be sure to match your breaker size to your wire size 14/2 wire size = 15amp breaker 12/2 wire size = 20amp breaker and 10/2 wire size = 30amp breaker. so if this is a new install you will need a total of 6 new breakers i can not give you the wattage or power consumption for anything but the lights which will pull about 500 watts if all on at the same time pulling about 4.3amps


How much can a 15W circuit breaker handle?

Answer for the US: Breakers are rated in amps, not watts. However, a 15A breaker can handle 15 amps, or about 1800 watts (using 120V), or 3600 watts (using 240V). However, this is only rated for noncontinuous loads (those not lasting for more than three hours). For continuous loads (loads lasting three hours or more), one must derate the circuit breaker by 80%. So for continuous loads, that same breaker should only have 1440 watts (using 120V), or 2880 watts (using 240V) on it.