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How do I wire this thing? Essency's EXR.

It looks a bit different because we don't use wire nuts, but it's easy! If something seems difficult or it's not going in easily, you may be doing it wrong.

  • Before you begin
    • For Pros Only
    • Follow all Codes
    • Read the Manual before attempting
    • Cut the Power
    • If it's your first time:
      • Step away
      • Give us a call
      • Get trained
  • After you open the connection box
    • Do you see the 2 open levers? - Use those ones
  • Wire 
    • Copper Only
    • Solid core is okay, but stranded or fine-stranded is better
    • The more strands the merrier, for better contact and flexibility
    • Use clean, 10 AWG wire only
      • Lighter gauge wire = not enough current
      • Heavier gauge = won't fit!
        • Keep a close eye on dryer cord on a retrofit - the jacket is typically to thick to fit into the connector properly.
    • Strip to 1/2"
  • Connecting
    • Remove bracket if necessary - gives you a bit more space & makes it easier to thread a strain relief nut, connect ground, etc...
    • No excess wire or wire nuts inside the box! 
      • Do not attempt to join existing wire to new wire inside the heater's junction box.  If existing wire is too short or the wrong gauge/type, it's best to run a new line.  If you must use wire nuts, it must be done externally and according to local & national codes.
    • Use strain relief whenever possible, especially if not in conduit
    • Wire must go in straight, with no tension - tense wire may pop out.
    • Push all the way to the back of the connector - you'll feel it bottom out.  
      • While holding wire to back of connector, push lever down.  If it won't close, double-check that you have straight, clean, 10 AWG copper, stripped to 1/2", with no tension.
    • After you've successfully closed the levers, give 'em a gentle tug to ensure good connection
    • Incorrect wire or connection may cause no/bad conductivity, or overheating  
    • Don't forget ground wire
    • Should look something like this below (factory-connected wiring removed for illustration)
      • Note the following:
        • Strain Relief
        • No extra length of wire or wire nuts inside box
        • No exposed copper
        • Levers fully closed
  • Look good? 
    • If so, close it up & flip the switch.
    • Here's a slide from our training sessions for your reference...

    • And a video from Wago themselves that might provide some additional insight...
  • Don't forget to register & connect the unit.  Call us with any questions!