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John1397



Joined: 16 Aug 2007
Posts: 44
PostPosted: Sat May 16, 2015 4:05 pm    Post subject: Heating cable Reply with quote
If one were to build a heating cable out of copper wire how many ohms would one need to power from 120 volt ac so the wire gets warm, but does not burn or melt the insulation?
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kuhurdler



Joined: 28 Dec 2006
Posts: 2879
Location: Overland Park, KS
PostPosted: Tue Jul 14, 2015 8:33 am    Post subject: Reply with quote
I would think you would want to control the current, with a fixed resistance based on the amount of heat you wanted... such as 60Watts per x area.
If you want a 60Watt floor heater, you put in 60 Ohms and give it a 1amp power supply.
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