double pole single pole

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  #1  
Old 10-29-05, 08:21 AM
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double pole single pole

what do the terms single pole - double pole actually mean in installing a termostat in a baseboard heater. What the difference?
thanks
Bill
 
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  #2  
Old 10-29-05, 08:44 AM
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a pole is basically a hot, an ungrounded conductor or L1,L2. single pole would be for 120 volt, or one hot. double pole would be for 240 volt or 2 hots. i assume you are dealing with residential.a thermostat should be wired to break one or both hots if its a line voltage thermostat and if its 120 or 240 volt system
 
  #3  
Old 10-31-05, 05:27 PM
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It means two separate circuits are actuated by, in this case, the thermostat. What that measn is that you need a two pole for 240V heaters (to break both hots), dingle pole for 120V heaters (as there is only one hot to break).
 
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