Sizing the heater CircuitAMPSVOLTSWATTSWIRE dimension COPPERWIRE size ALUMINUMCIRCUIT PROTECTION
121201,440#14/2#12/215 Amp - 1-Pole
161201,920#12/2#10/220 Amp - 1-Pole
122402,880#14/2#12/215 Amp - 2-Pole
162403,840#12/2#10/220 Amp - 2-Pole
242405,760#10/2#8/230 Amp - 2-Pole
322407,680#8/2#6/240 Amp - 2-Pole
4124010,000#6/2#4/260 Amp - 2-Pole
5224012,500#4/2#3/270 Amp - 2-Pole
62.524015,000#2/2#1/0100 Amp - 2-Pole



You are watching: Multiple baseboard heaters on one circuit

The over circuit sizing is based on 75C wire and also for reference only. Always consult regional codes for appropriate sizing.According come the National electrical Code heating circuits are thought about a consistent load and therefore should be derated through 25%. (For example: a 20 Amp heater circuit can not have an ext than 16 Amps of load connected.)120 Volt heaters need 1-Pole circuit breakers; 240 Volt heaters need 2-Pole breakers.Use 2-wire cable through ground (Romex™ or BX).When place multiple heaters on a circuit do not exceed the wattage listed for the corresponding wire and circuit breaker size. (For example: 2-1000W & 1-1500W, 240V heaters = 3500 watt total. These 3 heaters would require 12/2 wire and a 20 Amp 2-Pole breaker if they were to all be placed on the same circuit. If much more heaters are required either run a new circuit or increase the wire and also breaker dimension to accommodate the load.)A 1500 Watt heater will expense the very same to run whether the is 120 or 240 Volt. 240 Volt heater circuits are an ext common since it to reduce the Amp draw on your breaker/fuse panel, as the chart shows, you have the right to place an ext heaters top top a 20 Amp 240 Volt circuit (maximum that 3840 Watts) matches a 120 Volt circuit (maximum that 1920 Watts).120 and also 240 Volt heaters room not interchangeable. A 240 Volt heater operation at 120 Volt will produce 25% that the rated wattage. A 120 Volt heater run at 240 Volt will certainly be 4x 120 Volt rated wattage ruining the heater destroyed and poses a major fire hazard.What voltage room my heaters?

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Fan Heater or Baseboard?

Comfort: A fan-forced heater will warmth a room within a couple of minutes whereas a baseboard will call for 30 come 40 minutes. A fan-forced heater will likewise maintain a an ext even temperature since the fan will certainly circulate air about the room. This to reduce the severity that hot/cold temperature swings.

Efficiency: A 1500 Watt baseboard provides the very same amount of electrical power as a 1500 Watt fan heater. The difference is a pan heater gives much more even heat throughout the room in order to reducing waiting stratification (hot waiting rising and also not mixing with the cooler floor air). This process makes you feel cooler bring about you to turn the baseboard thermostat come a greater temperature setting whereby it runs much more often hence using much more electric power than the exact same size pan heater.

See more: Convert 650 Meters Is How Many Feet, 650 Meters To Feet Conversion

Every 1° a thermostat is rotate up will certainly raise a power bill 3.1%. As such, a baseboard set to 75°F will price you 15.5% an ext than a fan heater set to 70°F.

Which fan Heater come Choose?