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This is not recommended. The heater will operate at more than its given specified wattage. A 208 volt heater run off 220 volts will have an output increase by 11.87 percent. Similarly, a 220 volt heater can be run off of 208 but the wattage will be reduced by 10.61%. The calculations, using Ohms' Law, are shown below.
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Watts = volts x amps (W = V x I) and I = W / V so, if we take a 2000 watts heater designed to run on 208 volts, I = 2000 / 208 = 9.6 amps
Resistance = volts / amps (R = V / I) so the heater's resistance is 208 / 9.6 = 21.632 ohms
Amps = volts / resistance (I = V / R) so, running on 220 volts, I = 220 / 21.632 = 10.17 amps
W = 220 x 10.17 = 2237 watts, which is an increase of 2237/2000 = 11.87%.
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W = V x I and I = W / V so, if we take a 2000 watts heater designed to run on 220 volts, I = 2000 / 220 = 9.09 amps
R = V / I so the heater's resistance is 220 / 9.09 = 24.2 ohms
I = V / R so, running on 208 volts, I = 208 / 24.2 = 8.595 amps
W = 208 x 8.595 = 1787.76 watts, which is a decrease of ( 2000-1787.76 ) / 2000 = 10.61%.
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SteveIt is not recommended to use 240 volts for a heater that requires 208 volts because this can potentially damage the heater or cause a safety hazard due to overvoltage. It's best to use the voltage specified by the manufacturer for the heater to ensure safe and proper operation.
Yes
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The heater will operate over its given specified wattage. A 208 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 208 but the wattage will be reduced.
For example if the heater is 5000 watts at 208 volts, the current is I =W/E 5000/208 = 24 amps. The resistance of the heater is R = W/I (squared) =5000/24 x 24 (576) = 8.68 ohms. Applying 240 volts on the same heater whose resistance is 8.68 ohms results in this new heater wattage rating. W = E (squared)/R = 240 x 240 (57600)/8.68 = 6636 watts. This is 1636 watts higher than the manufacturer's safety rating.
W = watts, I = amperage, R= resistance in ohms and E = voltage.
The voltage range that the heater can handle should be marked on the case. The supply voltage must be within that range. Do not run on excessive voltage because the amount of heat produced could be dangerous.
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208 volt heater on 240 volts
The heater will operate over its given specified wattage. A 208 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 208 but the wattage will be reduced.
For example if the heater is 5000 watts at 208 volts, the current is I =W/E 5000/208 = 24 amps. The resistance of the heater is R = W/I (squared) =5000/24 x 24 (576) = 8.68 ohms. Applying 240 volts on the same heater whose resistance is 8.68 ohms results in this new heater wattage rating. W = E (squared)/R = 240 x 240 (57600)/8.68 = 6636 watts. This is 1636 watts higher than the manufacturer's safety rating.
W = watts, I = amperage, R= resistance in ohms and E = voltage.
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What is the maximum volts that can be used on a 208 230 volt motor?
You should not go above 240 volts for that type of motor.
Can you run a 208 volt device on 240 volts?
Running a device designed for 208 volts on a 240-volt power supply can damage the device due to the higher voltage. It's important to match the voltage specifications of the device with the power supply to prevent any harm or malfunction. Using a transformer to step down the voltage from 240 volts to 208 volts would be a safer option.
Will a 208 volt 3 phase equipment work on 240 volt 3 phase?
Yes, a 208 volt 3 phase equipment can work on a 240 volt 3 phase system. The equipment may operate slightly outside of its designed voltage range, so it is important to check the manufacturer's specifications to ensure compatibility and safe operation. A voltage converter may be necessary in some cases.
Can you connect 208 volt equipment to 240 volts?
It is not recommended to connect 208 volt equipment to a 240 volt power source as this could result in damage to the equipment or pose a safety hazard. It is best to use the correct voltage power source for the equipment to ensure safe and proper operation.
Do you need a step down transformer to run a 208 volt steam table on 240 volt feed?
Yes a transformer should be used. The steam table needs its correct voltage otherwise on 240 volts it will operate over its given specified nameplate wattage. A 208 volt heating element run off of 240 volt will have an output increase by 75 percent.
