# Do higher wattage light bulbs draw more amps?

Yes, and it's proportional.

V * I = P

Where V is the voltage in Volts, I is the current in Amperes, and P is the power in Watts.

So we get:

I = P / V

For example, with a 240 Volt supply, a 12 Watt lamp would draw:

12/240 0.05 Amperes, or 50 milliamps

### How many amps does a chandelier use?

The amperage that a chandelier draws is based on the amount of bulbs and the wattage of the bulbs used in the fixture. Count the amount of bulbs and multiply that number by the wattage of the bulbs. Take this total wattage and use this formula. I = W/E. Amps = Watts/ Volts. Read More

### Do the same wattage candelabra and incandescent bulbs draw the same power?

Yes, wattage is wattage, is wattage, is wattage. "Power" is calculated in wattage. It equals the voltage times the current in amps. In a light bulb, the resistive filament will cause a certain amount if current to flow making the filament hot and producing light. Read More

### On a 15 amp circuit how many lamps can you have and do you just add up the wattage of the bulbs to get the proper wattage for that 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… Read More

### What is the amps of flood light?

The amperage of a flood light is governed by the wattage of the lamp. Read More

### How many amps for a light bulb?

Find out the wattage and voltage of the bulb. Divide the watts by the volts, that gives the amps. Read More

### How many amps does a 12 volt light draw?

Have to know the wattage or resistance of the lamp to answer this question. Read More

### Which safer 110v or 220v and why?

It is the current that kills you. Given a specific wire size the wattage that can result is larger for higher voltages because for the same current the higher voltage computes to a higher wattage since watts = volts x amps. Read More

### How much electricity does a heater use?

It is dependent on the wattage rating of the heater. The higher the wattage, more electricity is consumed. Watts = Amps x Volts. Read More

### How many 75 watt bulbs can be on a 20 amp circuit?

To answer this question a voltage needs to be stated. W = Amps x Volts to find total circuit wattage. Then divide the bulb wattage into total circuit watts. Read More

### What is the Amperage used by a stove element?

Stove elements are sold by wattage of the element. Low heat usually has a low wattage. High heat has a higher wattage. That said and to answer your answer. Watts = amps x volts. Todays stoves have 240 volt elements. amps = watts/volts. Say an element is rated at 2000 watts at 240 volts. 2000/240 = 8.3 amps. Read More

### How many volts is required to light a fifteen watt light bulb?

There is no answer! It depends on the design of the bulb. You can have a 15 watt bulb that is 120 volts or one that is 6 volts. Watts is a measure of power. Volts times amps equals watts. At any given wattage, the higher the voltage is, the lower the amps and viceverca. Read More

### Can you use 5 60watt bulbs in a light fixture that is wired with 18 gauge wire?

Two thoughts here, one the fixture should be rated at the maximum wattage allowed for the socket the bulb screws into. A label should state "maximum wattage allowed". To do a calculation Watts = Amps x Volts. Amps = Watts/Volts. 5 x 60 watts = 300 watts. 300/120 = 2.5 amps. The electrical code only rates down to #14 wire which is rated at 15 amps. From here you have to make the decision. Read More

### How many watts can you put on a light switch?

If we assume that you are using a common 15 Amp lighting circuit and switch and using 120 volts to power the bulbs then you need to keep the wattage at 80% of 15 amp worse case or 12 amps. Watts = amps x volts for standard incandescent bulbs. 12 x 120 = 1440 watts. Read More

### How many Watts would one string of 300 Christmas tree bulbs with 2.5 volt bulbs working off of 120V power source equate to?

If you can tell me the resistance across the bulb, I can tell you the total wattage. Watt = amps x volts. I (amps) = E (volts 2.5)/ R (resistance in ohms). Calculate for amps draw on one lamp and then times 300 will give you total amperage. Take this value times total voltage and it will give you total wattage. Read More

### How many amps in 6 watts at 12 volts?

Wattage is volts times amps. To find amps when you know volts and watts, divide wattage by voltage. In this case, it would be 0.5 amps. Read More

### How many 100 watt lights per breaker?

I would use no more 14 100watt bulbs on a 15 amp circuit or 19 bulbs on a 20 amp circuit. You can calculate this by taking 80% of circuit amperage I.E 12 amps or 16 amps and then multiply by circuit voltage(120) to get 1440 watts and 1920 watts. Then take these values divided by bulb wattage(100 watts) to get 14.4 bulbs and 19.2 bulbs. Then round down for partial bulbs to get 14… Read More

### How many amps do you need if you have a 480 volt space heater?

The heater should have a wattage rating (very few list amps). Calculate the amps using the wattage and voltage. Amps = Watts/Volts(480). Read More

### How many amps are there in a light bulb?

There are zero amps in a light bulb. The amperage that a bulb draws is dependant upon the voltage that is applied to the bulb and the wattage rating of the bulb. The equation for amperage is Amps = Watts/ Volts. When you establish what these parameters are, using the equation will give you the answer that you are looking for. Read More

### What is least expensive to run a heater with 750 watts and 7.1 amps or 600 watts and 12.5 amps?

750Watts is the most expensive the higher the wattage the more units of electricity you will use up. Read More

### How many amps does a ceiling fan use?

Between 0.5 - 0.9 amps (not including the energy for the light bulbs) depending on the make and model. Read More

### How many amps does a dehumidifier draw?

Divide the wattage by the voltage - this equals amps. Read More

### What will it cost less running 460V motor or 208V motor?

No, you are charged by the wattage that you use. Watts are the product of amps times volts. Say you have a device that draws 5000 watts and you are using a voltage of 480 volts then the amperage will be A = W/E = 5000/480 = 10.4 amps. Now using that same wattage at 208 volts the amperage will be A = W/E = 5000/208 = 24 amps. As you can see the only… Read More

### How many 60 watt light bulbs can be installed on a 15 amps breaker?

Assuming 120 VAC service, a 60 Watt incandescent bulb draws about .5 amps. You want to only be at 80% capacity for your 15A circuit or 12 A. Hence, the answer would be 24. However, if it is likely that someone might put in a larger wattage bulb at some point you would have to account for that. Read More

### How is the brightness of a light bulb related to resistance?

To run at the same voltage, a higher wattage incandescent light bulb has a lower resistance than other bulbs having a lower wattage. Ohm's Law (A = V / R) states that, at a given voltage, the lower the resistance of the bulb's filament is made, then the higher its current flow will be. Higher current means more energy, more heat, and more light. A higher resistance filament restricts the current flow more, resulting in… Read More

### How do you convert amps to wattage?

Take your voltage (ie 110 in NA) and multiply the amperage to get your wattage. Read More

### What gauge wire is needed for an 19 bulb chandelier?

To answer this question the total wattage of the fixture is needed. To find this you need to find out the wattage of one bulb. If all of the bulbs are the same multiply the wattage of the bulb times 19. Use this total wattage in the following equation. I = W/E, Amps = Watts/Volts. In North America a #14 conductor is rated at 15 amps but has to be de-rated for a continuous load… Read More

### How do you determine the wattage capacity need by a power supply?

Wattage is a measure of electrical power. Wattage is calculated by multipliying volts by amps in a system. Read More

### How many CFL bulbs can you use on a single pole dimmer?

Most CFL bulbs will not work with a dimmer, but there are special ones made for dimmers. Assuming you find some that work, the number depends on the wattage of the bulbs and the rated amperage of the dimmer. To figure it out, you would take the total wattage and divide it by volts. ( 120V) for normal house hold) which will give you amps. Then you would do 15% of the amps the dimmer… Read More

### Why current in secondary coil in a step down transformer is higher?

Because the voltage is lower and the wattage (minus losses) is the same amps increase. Ohms law. Read More

### How do you determine the wattage capacity?

Wattage can be determined by three equations. They are W = I x E, W = I squared x R and W = E squared/R. W = watts, I = amps, E + volts and R = resistance in ohms. Read More

### How many amps is 1000 volts?

In order to calculate the number of amps in 1000 volts, the wattage is required. The formula for calculating amps is: amps = watts / volts. Read More

### If you have a solar panel that produces 100 watts how many amps does it produce?

Wattage = Volts x Amps Read More

### What unit is the electrical power of light bulbs measured in?

Light bulb power consumption is measured in watts. Watts, it is the product of amps x volts. Read More

### What is the difference between amps and volt-amps?

Amps is a measure of current flowing in a circuit. Volt-Amps or (VA) is a measure of power and is equivalent to wattage for a pure resistive load. Read More

### How is electrical power measured in a light bulb?

Electric power is measured in Watts. The wattage of a light bulb IS the power it uses. Watts = anps x volts. 100 watt lamp at 120 volts draws .83 amps. The wattage rating of a light bulb is governed by the length of the filament which is only a resistance wire. Shorter wire, less resistance, brighter light. Read More

### How many amps does an oven draw?

Amps for an oven are governed by the total wattage of the oven and what the voltage supply to the oven is. Read More

### How does voltage drop effect the amps?

amps drop as voltage drops , so the wattage goes down too. Read More

### How many amps are in a 360 watt vacuum?

If the voltage in your vacuum is 120 then you divide the Wattage by the Voltage to get 3 amps. Read More

### What is wattage a measure of?

It is a measure of electrical power. It is Voltage multiplied by Amps. All electrical applicances should give it's wattage or at least it's voltage and Amps so you can work out the wattage. It should be noted that that figure is the maximum that appliance would use. Read More

### How many amps is 12 kilowatts?

Twelve kilowatts is zero amps. Watts is the product of amps times volts. Without the voltage the wattage can not be calculated. Read More

### How many watts is 24 amps?

It depends on the voltage. Multiply the Amps by the volts, and you get the wattage. So if you have 24 amps at 240V it draws 5760 watts. Read More

### In your house wired for 110-V how many 60 watt light bulbs can you run at the same time without blowing a safety fuse?

Can't answer that w/o knowing the Ampere rating of the fuse. A standard house circuit being 15 amps you would load the circuit up to 14.7 amps with 27 light bulbs. Read More

### What will consume more wattage - a 110 volt appliance drawing 10 amps or a 220 volt appliance drawing 8 amps?

The equation for wattage is W = A x V. Substitute your values into this equation and you will have your answer. Read More

### If a microwave has 15 amps what is the wattage?

volts X amps = watts standard 120 X 15 amps =1800watts microwaves generally use about 1000 watts which is 8.33 amps... Read More

### How many watts is 84 amps and 48 volts?

Wattage is the product of amps times volts. W = A x V. Read More

### How many amps do light bulbs draw?

Depend on watt and voltage use of light bulbs. You can use this ohm's law formular to calculate the current draw on light bulbs. I (current in amp) = P (watt)/ E (voltage) If 25W light bulb use in 115V AC (resident home) then current draw will be: 25/115 = 0.22A or 22 miliamperes. Hope this help. Read More

### How do you know how many light fixtures a 15-amp 120-volt circuit can hold?

Depends on the fixture rating which is sized by the bulb wattage. For example, if you were using 60 Watt incandescent bulbs, they draw about 1/2 amp each. For a worst case continuous load that would be 80% of 15 amps = 12 Amps so it would be 24 fixtures rated for 60 watts each. Read More