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Can I use 240 volt heater elements in a 120 volt hot water heater?
Wiki User
∙ 6y ago
No. For an example using a 3500 watt element. The amperage through the element will be I = W/E, 3500/120 = 29 amps. The resistance of this 3500 watt element will be R = E/I, 120/29 = 4.13 ohms.
Now using the 200 volts and finding the amperage I = E/R, 200/4.13 = 48 amps. The new wattage of the element has become W = A x V, 48 x 200 = 9600 watts.
The element will not stand the increase in amperage and will burn open.
To operate on 200 volts and still have a 3500 element in the tank you will have to find an element with a resistance of 12 ohms. I = W/E, 3500/200 = 17 amps.
R = E/I = 200/17 = 12 ohms. This is a resistance three times more than the 120 volt element to achieve the 3500 watt rating.
Wiki User
∙ 11y ago
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What size breaker for 120 volt 2500 watt water heater?
20 amp is perfect, 15 is fine
Wiring diagram electric baseboard heater?
Yes, the heater is a 240/120 heater, but I want to operate as 120 volt
What size breaker for a 1500 watt 120 volt heater?
15 amp
Can you soft wire an electric water heater and plug it into a household outlet?
If it does not come with a plug on it, no. If it is made for direct wire, then 99.9% chance is that it is a 240 volt unit. If you plug it into a 120 volt outlet your water will barely get warm.
What will happen if 120 volt appliance is plugged into 220 volt outlet explain with electrical equation?
If V is the rated voltage of the equipment, and Vs is voltage of the supply, we have this approximate equation: Vs = 2 V. That is enough to wreck the equipment and/or blow the fuse.120 volt appliance on 240 voltsThis senerio will use an electric baseboard heater but the results will be the same for any electrical appliance.The heater will operate over its given specified wattage. A 120 volt heater run off of 240 volt will have an output increase. Ohms law stated that current is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit. A 240 volt heater can be run off of 120 volts but the wattage will be reduced.For example if an ordinary 1000 watt baseboard heater's supply is 120 volts, the current of the heater will be, I = W/E 1000/120 = 8.3 amps.The resistance of the heater is R = W/I (squared) =1000/8.3 x 8.3 (69) = 14.5 ohms.Applying 240 volts on the same heater whose resistance is 14.5 ohms results in a new heater wattage rating. W = E (squared)/R = 240 x 240 (57600)/14.5 = 3972 watts.This is 2972 watts, almost 300%, higher than the manufacturer's designed safety rating.The amperage drawn by connecting a 120 volt, 1000 watt heater to a 240 volt source will be, I = W/E = 3972/120 = 33 amps.W = watts, I = amperage, R = resistance in ohms and E = voltage.
Can i run a 240 volt water heater on 120 volt?
No. A water heater requires a 240 volt connection and cannot be re-wired to run on 120 volts. There isn't enough amperage in 120 volts to power the heating rods that are inside.
What size breaker for 120 volt 2500 watt water heater?
20 amp is perfect, 15 is fine
Wiring diagram electric baseboard heater?
Yes, the heater is a 240/120 heater, but I want to operate as 120 volt
What size breaker for a 1500 watt 120 volt heater?
15 amp
Can you soft wire an electric water heater and plug it into a household outlet?
If it does not come with a plug on it, no. If it is made for direct wire, then 99.9% chance is that it is a 240 volt unit. If you plug it into a 120 volt outlet your water will barely get warm.
What will happen if 120 volt appliance is plugged into 220 volt outlet explain with electrical equation?
If V is the rated voltage of the equipment, and Vs is voltage of the supply, we have this approximate equation: Vs = 2 V. That is enough to wreck the equipment and/or blow the fuse.120 volt appliance on 240 voltsThis senerio will use an electric baseboard heater but the results will be the same for any electrical appliance.The heater will operate over its given specified wattage. A 120 volt heater run off of 240 volt will have an output increase. Ohms law stated that current is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit. A 240 volt heater can be run off of 120 volts but the wattage will be reduced.For example if an ordinary 1000 watt baseboard heater's supply is 120 volts, the current of the heater will be, I = W/E 1000/120 = 8.3 amps.The resistance of the heater is R = W/I (squared) =1000/8.3 x 8.3 (69) = 14.5 ohms.Applying 240 volts on the same heater whose resistance is 14.5 ohms results in a new heater wattage rating. W = E (squared)/R = 240 x 240 (57600)/14.5 = 3972 watts.This is 2972 watts, almost 300%, higher than the manufacturer's designed safety rating.The amperage drawn by connecting a 120 volt, 1000 watt heater to a 240 volt source will be, I = W/E = 3972/120 = 33 amps.W = watts, I = amperage, R = resistance in ohms and E = voltage.
What current is taken by a heater with a resistance of 24 ohms when connected to 120 volt supply?
I don’t know
Can a 208 volt hot water heater be used with 110 volt with a 20 amp fuse?
Yes, but by using 120 volts on the 208 volt element you will only be able to obtain 1/4 of the rated wattage from the element not 1/2 like it seems you should.
What is the resistance of 450 watts 120 volt heater?
First find the current, I = W/E, 450/120 = 3.75 amps. R = E/I, 120/3.75 = 32 ohms.
How do you use 110 heater to 220 volts supply?
You don't. The heater will operate over its given specified wattage. A 120 volt heater run off of 240 volt will have an output increase. Ohms law stated that current is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit. A 240 volt heater can be run off of 120 volts but the wattage will be reduced. For example if an ordinary 1000 watt baseboard heater's supply is 120 volts, the current of the heater will be, I = W/E 1000/120 = 8.3 amps. The resistance of the heater is R = W/I (squared) =1000/8.3 x 8.3 (69) = 14.5 ohms. Applying 240 volts on the same heater whose resistance is 14.5 ohms results in a new heater wattage rating. W = E (squared)/R = 240 x 240 (57600)/14.5 = 3972 watts. This is 2972 watts, almost 300%, higher than the manufacturer's designed safety rating. The amperage drawn by connecting a 120 volt, 1000 watt heater to a 240 volt source will be, I = W/E = 3972/120 = 33 amps. W = watts, I = amperage, R = resistance in ohms and E = voltage.
What is the amp rating for a 2kw fan heater?
From a 120 Volt supply, the Amp rating is calculated as 2,000 Watts (which is 2kW) divided by 120 Volts = 16.7 Amps.
My 240v 2 element water heater was salvaged and installed in the barn we are getting only .4 volts at the elements and no hot water what could be wrong with our wiring?
Make sure that the water heater is connected across the 240 volt bus of the panel that it is connected to. You should have a two pole 20 amp breaker supplying the voltage through #12 copper wire with an insulation factor of 90 degrees C. Sometimes if an electrical panel has mini breakers installed in it, the two load wires will get connected to the two poles on a mini breaker. This is not across the 240 volt bus, the both wires are connected to the breaker on the 120 volt leg.
