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This type of question usually means you aren't ready to do this yourself. Study some electrical material and the National Electrical Code and work this answer out for yourself. If I were to give you an answer, you might attempt to do something you shouldn't be doing, and that may cost someone a shock, a home fire, or their life.
You can have up to 10 75-watt bulbs on a 15 amp circuit. Each 75-watt bulb consumes 0.625 amps (75 watts divided by 120 volts), so 10 bulbs would consume 6.25 amps, which is under the 15 amp limit for the circuit.
Add up the bulbs and you will have the total wattage for that circuit. Let's say it is a typical 120Vac household circuit.
15 amps is the maximum that circuit will handle. Current (amps) is calculated by:
I = Power (wattage) / Volts, so for example:
I = (10) 100 watt light bulbs / 120
Current = 1000/120 = 8.3 amps, You are safe,
In reverse, to figure out how many bulbs you can have:
Multiply the bulb wattage by the number of bulbs you have (on an individual crkt). This cannot exceed 1800.
1800 is the total wattage allowed for a 15 amp, 120V circuit.
The same is true for any device used on a circuit. Toaster, radio, etc. The wattages will be listed on the device.
Is your circuit a temporary "work site" type bulb stringer?
The math is simple. Watts = Volts * Amps
In this case Amps are fixed, at 15, and you want to know the total wattage that can be drawn by all the appliances you add to the circuit.
So the answer depends on the voltage. Voltage can be anything, but there are some commonly used domestic supply values:
For 220 volts, 220*15 = 3300watts
For 110 volts, 110*15 = 1760watts
For 240 volts, 240*15 = 3600watts
Assuming a standard incandescent bulb with a 120 VAC supply it is 19. Now there are other factors that you need to make sure of like the rating of the fixtures. For example you could size for 75W bulbs but someone might decide to go to 100 W in the future.
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The way we get to 19 is that each will draw about .625 amps. We need to divide this into the breaker rating, but only at 80% of capacity for a continuous load. So we have 12 / .625 giving 19.2 as result.
The key formula is Watts = Volts x Amps.
Answer for UK, Europe and countries running a 50 Hz supply service.
If you have a 240 v supply and you use 20-watt ceiling lamps, you can have about a hundred on a standard 10-amp lighting circuit.
Depends on the wattage of each light and if ONLY lights will be on the circuit and no outlets. On a 15 amp circuit at 120 volts it is rated at 1800 watts. But the NEC restricts you to only a load of 80% of the circuit so that means you can only load the circuit to 1440 watts. Assuming you are installing 75 watt can lights you can install 19 can lights. Install 65 watt can lights and you can install up to 22 can lights. But if you installed fluorescent can lights pulling 14 watts each you can install 102 lights. Install 15 watt LED bulbs and you can install 96. You will have line voltage loss so be aware of that on any long run. The fact is that someone could come along and remove the fluorescent or LED bulbs and install regular bulbs. So my advice is to assume each light to be a 75 watt light and limit the circuit to no more than 19 lights.
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How many 60 watt bulbs can a 15 amp handle?
A 15 amp circuit can handle approximately 8-10 60 watt bulbs. Each 60 watt bulb draws 0.5 amps of current, so you divide the circuit's amp rating (15 amps) by the current draw per bulb (0.5 amps) to get the approximate number of bulbs it can handle.
How many amps would a 150 watt bulb draw in a 120v circuit?
1 amp
How many amp circuit do you need for a 110 volt 1500 watt hot water heater?
For a 1500 watt hot water heater connected to a 110 volt power source, you would need a 13.6 amp circuit. It is recommended to use a 15 amp circuit to provide some safety margin.
How many 100 watt lights per breaker?
It is generally recommended to have a maximum of 12 outlets/lights on a 15 amp circuit breaker. With each 100 watt light consuming 0.83 amps, you could safely have around 18 lights on the circuit. It's always best to consult a licensed electrician to ensure safety and compliance with local regulations.
Number of 70 watt lights on a 15 amp circuit?
You can safely connect up to 10 70-watt lights on a 15 amp circuit. Each 70-watt light draws 0.58 amps, so you would not exceed the circuit's 15 amp capacity with 10 lights.
How many 60 watt bulbs can a 15 amp handle?
A 15 amp circuit can handle approximately 8-10 60 watt bulbs. Each 60 watt bulb draws 0.5 amps of current, so you divide the circuit's amp rating (15 amps) by the current draw per bulb (0.5 amps) to get the approximate number of bulbs it can handle.
How many watts are in 100 2.5 volt bulbs?
This question does is not answerable. A watt is a volt times an amp. With out knowing how many amps the bulbs use there is no answer.
How many amps would a 150 watt bulb draw in a 120v circuit?
1 amp
How many amp circuit do you need for a 110 volt 1500 watt hot water heater?
For a 1500 watt hot water heater connected to a 110 volt power source, you would need a 13.6 amp circuit. It is recommended to use a 15 amp circuit to provide some safety margin.
How many 100 watt bulbs can a 110 volt circuit handle?
To answer this question, you need to know how many amps the circuit that is connected to the light bulb can handle. For home applications with a 15 amp circuit and no other loads connected you get: Power = Current * voltage, Substituting the known information yields: power = 15 amps * 110 volts, which is 1650 watts of total capacity. You have 100 watt bulbs, so: 1650/100 = 16.5 bulbs If your circuit is other than 15 amps, or if there is additional loads on the circuit, you must adjust the current or total capacity accordingly
How many 100 watt lights per breaker?
It is generally recommended to have a maximum of 12 outlets/lights on a 15 amp circuit breaker. With each 100 watt light consuming 0.83 amps, you could safely have around 18 lights on the circuit. It's always best to consult a licensed electrician to ensure safety and compliance with local regulations.
How many watts on a 40 amp circuit breaker?
about 4800 watt but should not use it 100% so to be safe 4000 watt (80%)
How many sixty watt bulbs could you connect in a bedroom?
The voltage of the bulbs is needed to answer this question. If we assume the voltage is 120 then the maximum wattage allowed on a 15 amp circuit is 1800 watts before the circuits over current device will trip. 1800/60 = 30 bulbs. To be certain that the circuit does not trip, only connect 29 bulbs to the circuit. If the circuit is considered as a continuous load then the load rating has to be reduced to 80% capacity. 1800 x .8 = 1440. With this de rating the number of bulbs allowed on the circuit would be reduced to 24 bulbs. This circuit would have to be a dedicated circuit and could not be combined with receptacles which could vary the load depending on what is plugged into them.
How many 150 watt flood lights can be on a 20 amp circuit?
The voltage needs to be known to give an answer to this question.
Number of 70 watt lights on a 15 amp circuit?
You can safely connect up to 10 70-watt lights on a 15 amp circuit. Each 70-watt light draws 0.58 amps, so you would not exceed the circuit's 15 amp capacity with 10 lights.
How many 50 watt lights on a 15 amp circuit?
50 watt equals less than 1/2 amp current flow at 120 volts so you can have 30 light on a 15amp breaker or 40 on a twenty amp breaker.
How many 25 amp bulbs fits 105 watt transformer?
Approximately 4 bulbs would fit a 105 watt transformer, as each 25-amp bulb consumes around 26.25 watts.
