TW> That is becasue the Heating elements are only being 1/2 powered. IE: the
TW> 10,000 Watt heating element becomes a 5,000 Watt element on 110 power.
TW> Simple Ohms law aplication.

That makes sence.  That would also explain why it would take twice as long
to heat up the hot tub at 110v.  It was running at half power.

I work with large Cisco networking equipment at work.  The large chassis
can can take different power supplies.  Some will run at 110v or 220v.  You
can buy a 4000 watt power supply that will run at 2000 watts if connected
110v or the full 4000 watt if connected 220v.  I assume that is due to the
single vs. dual phase connection?

- Mark

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