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220v water heater

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Anthony Guzzi

Jan 1, 1970
0
So I work in the electrical dept at a large home improvement store, but
I'm not and have never actually been an electrician.
I recently found out that on most 220v hot water heaters (in the US)
they don't use three wires for the connection, like they do for most
220v things (dryers, ranges) and that the hot water heaters simply have
2 hots, and no neutral. This baffles me. Why is this? Doesn't
everything have to have a neutral?
 
T

TimPerry

Jan 1, 1970
0
Anthony Guzzi said:
So I work in the electrical dept at a large home improvement store, but
I'm not and have never actually been an electrician.
I recently found out that on most 220v hot water heaters (in the US)
they don't use three wires for the connection, like they do for most
220v things (dryers, ranges) and that the hot water heaters simply have
2 hots, and no neutral. This baffles me. Why is this? Doesn't
everything have to have a neutral?

nope: no reason for it in this case. it DOES need a safety ground however.

think of it as if it were a big battery and a lightbulb. there is no reason
to tap halfway into the battery.
 
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