Old switch 2 wires. New switch 3 wires. Now what?

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  #1  
Old 03-10-07, 07:50 AM
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Old switch 2 wires. New switch 3 wires. Now what?

I live in Perú, so this is all 220V.

This is my situation, I have a water heater with its own breaker in the box (blade type), out of that come two wires (from a double-pole breaker, 220V I assume). Those two wires were connected to a simple throw-switch, two came in, switch, two came out, went directly to the heater. The heater has three wires going into it, the two coming from the switch and a third connected directly to the ground in the breaker box.

What I want to do is replace the switch with an electronic timer I've bought, but I have no idea how to do this...can anyone help?

Diagrams:

http://www.quehacemos.com/switch.gif

Edit, hmm, can't post inline images, have to put a link.
 
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  #2  
Old 03-10-07, 07:54 AM
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You need a different switch.

I would ask why you want a switch at all, but that is a different question.
 
  #3  
Old 03-10-07, 07:57 AM
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I need the switch because the heater is responsible for about 35% of my monthly electric bill and I want to take a little more control of when it shuts on or off.

Darn, I thought this switch would work. I guess I should go back to Ace and switch the switch.
 
  #4  
Old 03-10-07, 11:14 AM
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Location: welland ontario
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Are you on a time of day based billing where they bill you different rates at night than during the day? If not then you won't be saving any money putting the heater on a timer.
 
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