0
Still curious? Ask our experts.
Chat with our AI personalities
Blake
Fran
Lao
Add your answer:
Earn +20 pts
How many amps are generated by a 1500 watt heater at 208 volts?
You have to be careful here. A heater will be advertised as "X" watts, but that is only true if you connect it to the voltage source it is supposed to be connected to. If you plug it into a higher or lower voltage source than intended, it will produce a different number of watts.Electric heaters are just resistors. When you run electricity through them, they get hot. If you run more electricity through that resistor, it will produce more heat. If you run less electricity through it, it will produce less heat.As an example, you can find "1500W/120V" water heater elements at the hardware store. This means that if you plug it into a 120V source, it will produce 1500W of heat, and it will pull 1500W/120V = 12.5A of current.You can calculate the resistance of the heater by taking voltage times voltage divided by watts, so this "1500W/120V" heater is really just a resistor of this many Ohms:120V * 120V / 1500W = 9.6 OhmThat Ohm value is physical property of the device. It will not change. If you were to take this heater now and plug it into a 240V supply, you can calculate the amps with voltage divided by resistance:240V / 9.6 Ohm = 25 AmpsAnd, for watts, you can take voltage times voltage divided by ohms:240V * 240V / 9.6 Ohm = 6000WSorry for the long text, but it's crucial that you understand this.If your heater is 1500W and is INTENDED to be running on 240V, you have a 38.4 Ohm resistor. Running that resistor at the lower 208V will produce only 1126W of heat and will pull just 5.4 Amps of current.However, if your heater is 1500W and is indented to be running on 120V, then you have a 9.6 Ohm resistor. You will almost certainly start a fire if you plug it into a 208V supply, because you will be pulling close to 22 Amps and producing 4500W of heat.
How do you change a heater from 120 volts 3a to 240 volts 1.5 a?
the simplest solution is by connecting two 120v 3amps heater in series , the same can be used directly on 240v. However the current drawn will still be 3 amps & Not 1.5 amps. The heater output power will be double that of a single heater running on 120v. ( or equvalent to two heaters operating on 120v. supply ) A more expensive method is to use a stepdown transformer which can be powered on 240v & connect the heater on the transformer 120v side. this method will consume approx. 1.5 amps from the 240v supply.
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.
An electric space heater requires 29 A of 120 V current to adequately warm a room What is the power rating of the heater?
The power rating of the electric space heater is 3480 watts (29 A * 120 V).
How do you calculate the current for single phase water heater?
To calculate the current for a single-phase water heater, you can use the formula: Current (A) = Power (W) / Voltage (V). Determine the power rating of the water heater in watts and the voltage it operates at (usually 120V or 240V in residential settings), then divide the power by the voltage to find the current in amperes (A).
