😃Thank you very much. That was very clear and fixes my self-installed heaters after 20 years !! How I goofed, I don't know. Now I know better ! Thanks again. 😃
Nice troubleshooting. The ONLY way you could make two heaters wired in series work on a 240V circuit, would be two 120V heaters of the same wattage wired in series, for example two 1500 watt 120 volt units. While this would work, I highly DO NOT recommend anyone do this for a couple of reasons. First off, if one of the heaters were replaced with a different wattage in the future, then the heater with the lower wattage of the two would get voltage higher than 120V, causing it to run hotter than it was designed for a create a safety hazard, while the higher wattage unit would get a lower voltage and give off less heat. Also if the heater needs to be replaced in the future, a future homeowner or contractor will probably get the specs off the nameplate before heading off to the home improvement center or online for a replacement and get one with the same wattage and voltage. If they follow the wiring diagram and wire the heater properly, that is, in parallel, then each heater would get 240V. A 120V heater wired to 240V would draw 2X the amps and produce 4X the wattage than it was designed eg. 1500 watt 120V unit produces 6000 watts of heat at 240V. The result is severe overheating, destruction of the heater and possibly torch the home. Thirdly, connection in series most likely violates the manufacturer's instructions, which is a violation of the National Electrical Code aka NFPA 70 if you live in the U.S., in this case an electrical injury or fire damage that occurs as a result of unapproved installations could result in your homeowners insurance claim denied.
You can not put them in series as you would need 440VAC for 2 of them. They must go in parallel just like any other electrical outlets are wired. Your circuit breaker and feed wires must be properly sized for the amperage drawn for the total number of heaters installed.
😃Thank you very much. That was very clear and fixes my self-installed heaters after 20 years !!
How I goofed, I don't know.
Now I know better !
Thanks again.
😃
Nice troubleshooting. The ONLY way you could make two heaters wired in series work on a 240V circuit, would be two 120V heaters of the same wattage wired in series, for example two 1500 watt 120 volt units. While this would work, I highly DO NOT recommend anyone do this for a couple of reasons. First off, if one of the heaters were replaced with a different wattage in the future, then the heater with the lower wattage of the two would get voltage higher than 120V, causing it to run hotter than it was designed for a create a safety hazard, while the higher wattage unit would get a lower voltage and give off less heat. Also if the heater needs to be replaced in the future, a future homeowner or contractor will probably get the specs off the nameplate before heading off to the home improvement center or online for a replacement and get one with the same wattage and voltage. If they follow the wiring diagram and wire the heater properly, that is, in parallel, then each heater would get 240V. A 120V heater wired to 240V would draw 2X the amps and produce 4X the wattage than it was designed eg. 1500 watt 120V unit produces 6000 watts of heat at 240V. The result is severe overheating, destruction of the heater and possibly torch the home. Thirdly, connection in series most likely violates the manufacturer's instructions, which is a violation of the National Electrical Code aka NFPA 70 if you live in the U.S., in this case an electrical injury or fire damage that occurs as a result of unapproved installations could result in your homeowners insurance claim denied.
Great job and demonstration guys. Thank you
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You can not put them in series as you would need 440VAC for 2 of them. They must go in parallel just like any other electrical outlets are wired. Your circuit breaker and feed wires must be properly sized for the amperage drawn for the total number of heaters installed.
Well said!! Thank you so much for your input.