02-02-2006, 05:14 AM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 3,346
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Water Heater
Simple water heaters have two wires to connect to the feed. In your case the red and white go to the 220 cable coming from your breaker panel. Some have four wires - two pairs together to each of one cable to the panel.
They are connected internally to first the top controller and the lower controller to provide sequencial operation of the heating elements. the elements are each about 3000 watt. They can't operate together because of the high current draw, hence the sequencial operation.
Hot water stratifies to the top of the heater where its drawn off. The cold water "dip" tube goes to the bottom of the heater so the bottom element is the workhorse of the heater. Once its setting is satiafied, it opens and transfers to the top element controller which then operates.
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