Posted by John T on November 20, 2016 at 08:14:00 from (209.94.253.137):
In Reply to: 120 volt heater posted by plow hand on November 20, 2016 at 07:54:20:
Far as I know the BTU of heat energy produced by any typical small portable pure resistive 120 VAC electric heater is 3.41 BTU per Watt and since for safetys sake it best not to draw much over 12 to 16 maps MAXIMUM from a typical 120 Volt 20 Amp household convenience Branch Circuit...............
A 12 amp 120 volt heater = 1440 Watts = 4910 BTU of heat
A 15 Amp 120 Volt heater = 1800 Watts = 6138 BTU of heat
Some typical small 120 Volt heaters run at 1500 Watts = 5115 BTU
That's true for a cheap Walmart box/cube electric heater or a more expensive Amish or Eden Pure PROVIDED they are straight resistance heaters, but the Amish or Eden Pure are better to look at plus may have added safety features over a cheap Walmart heater.
NOTE Contrary to another current post a pure resistive unity one power factor strip heater operates at the same efficiency regardless if at 120 or 240 or 208 or 277 etc. Volts single phase IE Its Power in Watts = Volts x Amps and produces 3.41 BTU of heat energy per Watt consumed.
That's my story n Ima stickin to it until proven otherwise lol
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